Finding the Fourth Proportional to 1,025,576.22, 1,538,510.10 and 315,663.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,025,576.22 : 1,538,510.10 = 315,663.42 : x
2. Step 2: Convert to fraction form
   1,025,576.22/1,538,510.10 = 315,663.42/x
3. Step 3: Cross multiply
   1,025,576.22x = 1,538,510.10 × 315,663.42
4. Step 4: Simplify right side
   1,025,576.22x = 485,651,359,870.54
5. Step 5: Solve for x
   x = 485,651,359,870.54/1,025,576.22
6. Step 6: Final answer
   x = 473,540.00