Ronaldinho Trading Co. is required by its bank to maintain a current ratio of at least 1.75, and its current ratio now is 2.1. The firm plans to acquire additional inventory to meet an unexpected surge in the demand for its products and will pay for the inventory with short-term debt. How much inventory can the firm purchase without violating its debt agreement, if their total current assets equal $3.5 million? (Round your final answer to the nearest dollar.)