Finding the Fourth Proportional to 2,454.52, 3,387.72 and 1,407.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,454.52 : 3,387.72 = 1,407.28 : x
2. Step 2: Convert to fraction form
   2,454.52/3,387.72 = 1,407.28/x
3. Step 3: Cross multiply
   2,454.52x = 3,387.72 × 1,407.28
4. Step 4: Simplify right side
   2,454.52x = 4,767,470.60
5. Step 5: Solve for x
   x = 4,767,470.60/2,454.52
6. Step 6: Final answer
   x = 1,942.32