Finding the Fourth Proportional to 1,152,951.96, 1,591,089.45 and 636,740.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,152,951.96 : 1,591,089.45 = 636,740.67 : x
2. Step 2: Convert to fraction form
   1,152,951.96/1,591,089.45 = 636,740.67/x
3. Step 3: Cross multiply
   1,152,951.96x = 1,591,089.45 × 636,740.67
4. Step 4: Simplify right side
   1,152,951.96x = 1,013,111,362,422.93
5. Step 5: Solve for x
   x = 1,013,111,362,422.93/1,152,951.96
6. Step 6: Final answer
   x = 878,710.82