Finding the Fourth Proportional to 1,146,087.96, 1,581,601.71 and 636,790.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,146,087.96 : 1,581,601.71 = 636,790.33 : x
2. Step 2: Convert to fraction form
   1,146,087.96/1,581,601.71 = 636,790.33/x
3. Step 3: Cross multiply
   1,146,087.96x = 1,581,601.71 × 636,790.33
4. Step 4: Simplify right side
   1,146,087.96x = 1,007,148,674,839.46
5. Step 5: Solve for x
   x = 1,007,148,674,839.46/1,146,087.96
6. Step 6: Final answer
   x = 878,770.84