Stores are located with (x, y) coordinates (14, 18); (20, 20); and (16, 44). The volume of product that each moves is 1,500, 2,800, and 1,400 units respectively. Based on their location and volume, compute the location where a central distribution warehouse should be located to minimize transportation, based on center of gravity.
What is the "X" coordinate of that warehouse only, rounded to the nearest one decimal place?