Finding the Fourth Proportional to 1,073.27, 1,481.25 and 631.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,073.27 : 1,481.25 = 631.55 : x
2. Step 2: Convert to fraction form
   1,073.27/1,481.25 = 631.55/x
3. Step 3: Cross multiply
   1,073.27x = 1,481.25 × 631.55
4. Step 4: Simplify right side
   1,073.27x = 935,476.03
5. Step 5: Solve for x
   x = 935,476.03/1,073.27
6. Step 6: Final answer
   x = 871.62