George Kyparisis owns a company that manufactures sailboats. Actual demand for George's sailboats during each of the past four seasons was as follows:
Season 1 2 3 4
Winter 1440 1280 1000 900
Spring 1500 1420 1620 1540
Summer 1 000 2120 2020 2 000
Fall 600 810 670 520
George has forecasted that annual demand for his sailboats in year 5 will equal 6500 sailboats.
1. Based on the given data and using the multiplicative seasonal model, the demand level for George's sailboats in the spring of year 5 will besailboats (enter a whole number).