[LexBaird]

All you have to do is look it up in any dictionary and the pronunciation is given regardless of the origin.

The first dictionary I checked says you are incorrect.

Meaning of FORTE
Pronunciation: 'fortey
WordNet Dictionary
Definition:
[n]  the stronger part of a sword blade between the hilt and the foible
[n]  (music) with great loudness
[n]  an asset of special worth or utility; "cooking is his forte"
[adv]  used as a direction in music; to be played relatively loudly
[adj]  used chiefly as a direction or description in music; "the forte passages in the composition"
 

[yarddog]

Well I guess I shouldn't have said "any dictionary" since you apparently have found one which gives that pronunciation, but I checked four which I have in my house and none of them give any other pronunciatio than "fort" for a person's strong point.

These include the Oxford and Random House dictionaries.

[Ryan Spock]

Interestingly, the dictionary.com definition felt so strongly about the controversy, they included the following note at the entry for "forte":

Usage Note: The word forte, coming from French fort, should properly be pronounced with one syllable, like the English word fort. Common usage, however, prefers the two-syllable pronunciation, (for-tay), which has been influenced possibly by the music term forte borrowed from Italian. In a recent survey a strong majority of the Usage Panel, 74 percent, preferred the two-syllable pronunciation. The result is a delicate situation; speakers who are aware of the origin of the word may wish to continue to pronounce it as one syllable but at an increasing risk of puzzling their listeners.