Finding the Fourth Proportional to 1,021,411.62, 1,531,870.79 and 452,478.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,021,411.62 : 1,531,870.79 = 452,478.15 : x
2. Step 2: Convert to fraction form
   1,021,411.62/1,531,870.79 = 452,478.15/x
3. Step 3: Cross multiply
   1,021,411.62x = 1,531,870.79 × 452,478.15
4. Step 4: Simplify right side
   1,021,411.62x = 693,138,058,835.85
5. Step 5: Solve for x
   x = 693,138,058,835.85/1,021,411.62
6. Step 6: Final answer
   x = 678,607.96