Finding the Fourth Proportional to 1,103.56, 1,522.73 and 631.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,103.56 : 1,522.73 = 631.37 : x
2. Step 2: Convert to fraction form
   1,103.56/1,522.73 = 631.37/x
3. Step 3: Cross multiply
   1,103.56x = 1,522.73 × 631.37
4. Step 4: Simplify right side
   1,103.56x = 961,411.43
5. Step 5: Solve for x
   x = 961,411.43/1,103.56
6. Step 6: Final answer
   x = 871.19