Finding the Fourth Proportional to 2,874.18, 4,309.92 and 925.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,874.18 : 4,309.92 = 925.32 : x
2. Step 2: Convert to fraction form
   2,874.18/4,309.92 = 925.32/x
3. Step 3: Cross multiply
   2,874.18x = 4,309.92 × 925.32
4. Step 4: Simplify right side
   2,874.18x = 3,988,055.17
5. Step 5: Solve for x
   x = 3,988,055.17/2,874.18
6. Step 6: Final answer
   x = 1,387.55