The following Information is available for a company's cost of sales over the last four months. Month January February March April Units Sold 390 790 1,550 2,350 Total Costs $ 30,600 $. 36,500 $ 48,500 $ 60,500 Using the high-low method, the estimated variable cost of sales per unit sold is: During its most recent fiscal year, Dover, Incorporated had total sales of $3,180,000. Contribution margin amounted to $1.490,000 and income was $385,000. What amount should have been reported as fixed costs in the company's contribution margin Income statement for the year