Finding the Fourth Proportional to 978,755.86, 1,350,680.88 and 543,239.92

Step by Step Solution

1. Step 1: Write the proportion equation
   978,755.86 : 1,350,680.88 = 543,239.92 : x
2. Step 2: Convert to fraction form
   978,755.86/1,350,680.88 = 543,239.92/x
3. Step 3: Cross multiply
   978,755.86x = 1,350,680.88 × 543,239.92
4. Step 4: Simplify right side
   978,755.86x = 733,743,773,196.73
5. Step 5: Solve for x
   x = 733,743,773,196.73/978,755.86
6. Step 6: Final answer
   x = 749,669.86