Finding the Fourth Proportional to 1,155.22, 1,594.17 and 631.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,155.22 : 1,594.17 = 631.24 : x
2. Step 2: Convert to fraction form
   1,155.22/1,594.17 = 631.24/x
3. Step 3: Cross multiply
   1,155.22x = 1,594.17 × 631.24
4. Step 4: Simplify right side
   1,155.22x = 1,006,299.89
5. Step 5: Solve for x
   x = 1,006,299.89/1,155.22
6. Step 6: Final answer
   x = 871.09