Finding the Fourth Proportional to 866,638.71, 1,300,411.43 and 354,683.88

Step by Step Solution

1. Step 1: Write the proportion equation
   866,638.71 : 1,300,411.43 = 354,683.88 : x
2. Step 2: Convert to fraction form
   866,638.71/1,300,411.43 = 354,683.88/x
3. Step 3: Cross multiply
   866,638.71x = 1,300,411.43 × 354,683.88
4. Step 4: Simplify right side
   866,638.71x = 461,234,969,815.33
5. Step 5: Solve for x
   x = 461,234,969,815.33/866,638.71
6. Step 6: Final answer
   x = 532,211.36