Finding the Fourth Proportional to 860,870.52, 1,187,293.86 and 764,145

Step by Step Solution

1. Step 1: Write the proportion equation
   860,870.52 : 1,187,293.86 = 764,145 : x
2. Step 2: Convert to fraction form
   860,870.52/1,187,293.86 = 764,145/x
3. Step 3: Cross multiply
   860,870.52x = 1,187,293.86 × 764,145
4. Step 4: Simplify right side
   860,870.52x = 907,264,666,649.70
5. Step 5: Solve for x
   x = 907,264,666,649.70/860,870.52
6. Step 6: Final answer
   x = 1,053,892.13