Finding the Fourth Proportional to 861,131.76, 1,291,988.00 and 381,294.03

Step by Step Solution

1. Step 1: Write the proportion equation
   861,131.76 : 1,291,988.00 = 381,294.03 : x
2. Step 2: Convert to fraction form
   861,131.76/1,291,988.00 = 381,294.03/x
3. Step 3: Cross multiply
   861,131.76x = 1,291,988.00 × 381,294.03
4. Step 4: Simplify right side
   861,131.76x = 492,627,317,029.83
5. Step 5: Solve for x
   x = 492,627,317,029.83/861,131.76
6. Step 6: Final answer
   x = 572,069.62