Finding the Fourth Proportional to 1,073.47, 1,481.59 and 631.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,073.47 : 1,481.59 = 631.62 : x
2. Step 2: Convert to fraction form
   1,073.47/1,481.59 = 631.62/x
3. Step 3: Cross multiply
   1,073.47x = 1,481.59 × 631.62
4. Step 4: Simplify right side
   1,073.47x = 935,794.47
5. Step 5: Solve for x
   x = 935,794.47/1,073.47
6. Step 6: Final answer
   x = 871.75