Here are the data for the past 21 months for actual sales of a particular product: January February March April May June July August September October November December LAST YEAR THIS YEAR 300 280 440 345 465 350 505 440 430 455 440 375 455 370 320 270 375 355 555 610 518 Develop a forecast for the fourth quarter using a three-quarter, weighted moving average. Weight the most recent quarter 0.50, the second most recent 0.25, and the third 0.25. Do the problem using quarters, as opposed to forecasting separate months. (Round your answer to 2 decimal places.) Forecast for the fourth quarter

Here are the data for the past 21 months for actual sales of a particular product: Develop a forecast for the fourth quarter using a three-quarter, weighted moving average. Weight the most recent quarter 0.50 , the second most recent 0.25 , and the third 0.25 . Do the problem using quarters, as opposed to forecasting separate months. (Round your answer to 2 decimal places.)