Finding the Fourth Proportional to 1,077,131.72, 1,486,354.38 and 624,451.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,077,131.72 : 1,486,354.38 = 624,451.88 : x
2. Step 2: Convert to fraction form
   1,077,131.72/1,486,354.38 = 624,451.88/x
3. Step 3: Cross multiply
   1,077,131.72x = 1,486,354.38 × 624,451.88
4. Step 4: Simplify right side
   1,077,131.72x = 928,156,786,937.23
5. Step 5: Solve for x
   x = 928,156,786,937.23/1,077,131.72
6. Step 6: Final answer
   x = 861,692.93