Finding the Fourth Proportional to 1,103.47, 1,522.73 and 631.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,103.47 : 1,522.73 = 631.34 : x
2. Step 2: Convert to fraction form
   1,103.47/1,522.73 = 631.34/x
3. Step 3: Cross multiply
   1,103.47x = 1,522.73 × 631.34
4. Step 4: Simplify right side
   1,103.47x = 961,354.32
5. Step 5: Solve for x
   x = 961,354.32/1,103.47
6. Step 6: Final answer
   x = 871.21