Finding the Fourth Proportional to 1,103.22, 1,522.17 and 637.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,103.22 : 1,522.17 = 637.38 : x
2. Step 2: Convert to fraction form
   1,103.22/1,522.17 = 637.38/x
3. Step 3: Cross multiply
   1,103.22x = 1,522.17 × 637.38
4. Step 4: Simplify right side
   1,103.22x = 970,200.71
5. Step 5: Solve for x
   x = 970,200.71/1,103.22
6. Step 6: Final answer
   x = 879.43