Chicago Furniture Company produces combination desk and chair sets for the elementary schools in the Midwest. As the second quarter is progressing it is important for the controller a budget for the third quarter. The sales department manager has provided the following forecast.

July 8,000 desk combos August 8,700 desk combos September 7,600 desk combos

October 8,700 desk combos November 8,800 desk combos

• In order to ensure Just-in-Time (JIT) deliveries are maintained in accordance with the needs of the schools Chicago Furniture Company has a standing policy that the inventory at the end of each month must be equal to 40% of the following month's forecasted sales. On July 1st there will be 3,200 desk combos in inventory.
• The building of each desk combo requires 12 board feet of pine planks which cost $0.70 per foot. In order to maintain proper inventory for building the desk combos the department must have 30% of the next month's production requirements.

I need help in creating a spreadsheet.