Finding the Fourth Proportional to 1,182,401.52, 1,631,720.56 and 645,857.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,182,401.52 : 1,631,720.56 = 645,857.52 : x
2. Step 2: Convert to fraction form
   1,182,401.52/1,631,720.56 = 645,857.52/x
3. Step 3: Cross multiply
   1,182,401.52x = 1,631,720.56 × 645,857.52
4. Step 4: Simplify right side
   1,182,401.52x = 1,053,858,994,214.61
5. Step 5: Solve for x
   x = 1,053,858,994,214.61/1,182,401.52
6. Step 6: Final answer
   x = 891,286.91