Finding the Fourth Proportional to 860,976.66, 1,188,147.78 and 479,003.34

Step by Step Solution

1. Step 1: Write the proportion equation
   860,976.66 : 1,188,147.78 = 479,003.34 : x
2. Step 2: Convert to fraction form
   860,976.66/1,188,147.78 = 479,003.34/x
3. Step 3: Cross multiply
   860,976.66x = 1,188,147.78 × 479,003.34
4. Step 4: Simplify right side
   860,976.66x = 569,126,755,033.59
5. Step 5: Solve for x
   x = 569,126,755,033.59/860,976.66
6. Step 6: Final answer
   x = 661,024.60