Finding the Fourth Proportional to 1,103.27, 1,522.54 and 631.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,103.27 : 1,522.54 = 631.21 : x
2. Step 2: Convert to fraction form
   1,103.27/1,522.54 = 631.21/x
3. Step 3: Cross multiply
   1,103.27x = 1,522.54 × 631.21
4. Step 4: Simplify right side
   1,103.27x = 961,031.70
5. Step 5: Solve for x
   x = 961,031.70/1,103.27
6. Step 6: Final answer
   x = 871.08