Answer : The salt produced in this reaction is potassium phosphate.
Explanation :
Neutralization reaction : It is a type of reaction in which an acid react with a base to give a salt and water as a product.
As per question, when phosphoric acid react with potassium hydroxide base then it gives potassium phosphate and water as a product.
The balanced chemical reaction will be,

From this we conclude that, the salt produced in this reaction is potassium phosphate.