Finding the Fourth Proportional to 1,400.15, 1,931.71 and 928.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,400.15 : 1,931.71 = 928.27 : x
2. Step 2: Convert to fraction form
   1,400.15/1,931.71 = 928.27/x
3. Step 3: Cross multiply
   1,400.15x = 1,931.71 × 928.27
4. Step 4: Simplify right side
   1,400.15x = 1,793,148.44
5. Step 5: Solve for x
   x = 1,793,148.44/1,400.15
6. Step 6: Final answer
   x = 1,280.68