What is the rule about ending a sentence with a preposition?

Ending a sentence with a preposition is believed by a lot of people to be incorrect.

Explanation:

Preposition is a word which is used to create a relationship between other words in a sentence. Ending a sentence with preposition according to John Dryden a dramatist in 1672 said that 'since one cannot end a sentence with preposition in Latin, one should not do it in English either."

Ending a sentence with preposition such as 'at, or, with, of, is prohibited in English language. Ending a sentence with a preposition especially in research paper or business proposal, sounds less formal. Therefore it is a rule not to end a sentence with preposition.