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 345 290 395 375 470 365 460 475 400 440 470 325 430 325 375 535 570 550 365 280 375 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. Solve the problem using quarters, as opposed to forecasting separate months. Note: 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 . Solve the problem using quarters, as opposed to forecasting separate months. Note: Round your answer to 2 decimal places