Finding the Fourth Proportional to 1,073.42, 1,481.25 and 631.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,073.42 : 1,481.25 = 631.23 : x
2. Step 2: Convert to fraction form
   1,073.42/1,481.25 = 631.23/x
3. Step 3: Cross multiply
   1,073.42x = 1,481.25 × 631.23
4. Step 4: Simplify right side
   1,073.42x = 935,016.08
5. Step 5: Solve for x
   x = 935,016.08/1,073.42
6. Step 6: Final answer
   x = 871.06