Cannot figure this out for some reason, please help ASAP!

Thermal Rising, Incorporated, makes paragliders for sale through specialty sporting goods stores. The company has a standard paraglider model, but also makes custom-designed paragliders. Management has designed an activity-based costing system with the following activity cost pools and activity rates: Activity Cost Pool Supporting direct labor Order processing Custom design processing Customer service Activity Rate $ 20 per direct labor-hour $ 192 per order $ 264 per custom design $ 428 per customer Management would like an analysis of the profitability of a particular customer, Big Sky Outfitters, which has ordered the following products over the last 12 months: Custom Design Number of gliders Number of orders Number of custom designs Direct labor-hours per glider Selling price per glider Direct materials cost per glider Standard Model 12 1 0 28.50 $ 1,875 $ 450 3 3 3 33.00 $ 2,490 $ 576 The company's direct labor rate is $18 per hour. Required: Using the company's activity-based costing system, compute the customer margin of Big Sky Outfitters. (Round your intermediate calculations and final answer to the nearest whole dollar amount. Loss amounts should be entered with a minus sign.) Customer margin $ 4,952