Finding the Fourth Proportional to 636,380.69, 954,570.71 and 187,105.28

Step by Step Solution

1. Step 1: Write the proportion equation
   636,380.69 : 954,570.71 = 187,105.28 : x
2. Step 2: Convert to fraction form
   636,380.69/954,570.71 = 187,105.28/x
3. Step 3: Cross multiply
   636,380.69x = 954,570.71 × 187,105.28
4. Step 4: Simplify right side
   636,380.69x = 178,605,215,669.26
5. Step 5: Solve for x
   x = 178,605,215,669.26/636,380.69
6. Step 6: Final answer
   x = 280,657.82