Finding the Fourth Proportional to 868,928.49, 1,199,162.42 and 542,434.91

Step by Step Solution

1. Step 1: Write the proportion equation
   868,928.49 : 1,199,162.42 = 542,434.91 : x
2. Step 2: Convert to fraction form
   868,928.49/1,199,162.42 = 542,434.91/x
3. Step 3: Cross multiply
   868,928.49x = 1,199,162.42 × 542,434.91
4. Step 4: Simplify right side
   868,928.49x = 650,467,550,660.10
5. Step 5: Solve for x
   x = 650,467,550,660.10/868,928.49
6. Step 6: Final answer
   x = 748,585.83