Finding the Fourth Proportional to 892,131.72, 1,231,143 and 484,233.64

Step by Step Solution

1. Step 1: Write the proportion equation
   892,131.72 : 1,231,143 = 484,233.64 : x
2. Step 2: Convert to fraction form
   892,131.72/1,231,143 = 484,233.64/x
3. Step 3: Cross multiply
   892,131.72x = 1,231,143 × 484,233.64
4. Step 4: Simplify right side
   892,131.72x = 596,160,856,250.52
5. Step 5: Solve for x
   x = 596,160,856,250.52/892,131.72
6. Step 6: Final answer
   x = 668,243.09