Final answer:
Approximately 509 shelves are needed for the shipment of books.
Step-by-step explanation:
To determine the number of shelves needed for the shipment of books, we divide the total number of books by the number of books each shelf can hold.
Number of books = 22,905
Number of books each shelf can hold = 45
Number of shelves needed = 22,905 / 45
= 509
Therefore, approximately 509 shelves are needed for the shipment of books.