To find how many pita sandwiches are made per day, we need to determine how many sandwiches are produced for each type of bread.
There are 4 types of bread: white, wheat, multigrain, and pita. The total number of sandwiches produced each day is 364.
Since the same number of sandwiches is produced for each type of bread, we can divide the total number of sandwiches by the number of types of bread:
\[ \text{Number of sandwiches per type} = \frac{364}{4} \]
Calculating the above expression:
\[ \frac{364}{4} = 91 \]
Thus, the sandwich shop makes 91 pita sandwiches per day.