Finding the Fourth Proportional to 825,432, 1,139,096.16 and 486,108.96

Step by Step Solution

1. Step 1: Write the proportion equation
   825,432 : 1,139,096.16 = 486,108.96 : x
2. Step 2: Convert to fraction form
   825,432/1,139,096.16 = 486,108.96/x
3. Step 3: Cross multiply
   825,432x = 1,139,096.16 × 486,108.96
4. Step 4: Simplify right side
   825,432x = 553,724,849,677.59
5. Step 5: Solve for x
   x = 553,724,849,677.59/825,432
6. Step 6: Final answer
   x = 670,830.36