To find out how many pita sandwiches are made per day, we need to divide the total number of sandwiches by the number of types of bread.
There are 4 types of bread: white, wheat, multigrain, and pita.
The total number of sandwiches produced each day is 364.
Now, we calculate the number of sandwiches per type of bread:
\[ \text{Number of sandwiches per type} = \frac{\text{Total sandwiches}}{\text{Number of types of bread}} = \frac{364}{4} = 91 \]
Thus, the number of pita sandwiches made per day is 91.
So, the answer is:
91