Finding the Fourth Proportional to 1,039.01, 1,550.48 and 928.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,039.01 : 1,550.48 = 928.14 : x
2. Step 2: Convert to fraction form
   1,039.01/1,550.48 = 928.14/x
3. Step 3: Cross multiply
   1,039.01x = 1,550.48 × 928.14
4. Step 4: Simplify right side
   1,039.01x = 1,439,064.83
5. Step 5: Solve for x
   x = 1,439,064.83/1,039.01
6. Step 6: Final answer
   x = 1,385.03