Finding the Fourth Proportional to 1,103.57, 1,522.92 and 637.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,103.57 : 1,522.92 = 637.82 : x
2. Step 2: Convert to fraction form
   1,103.57/1,522.92 = 637.82/x
3. Step 3: Cross multiply
   1,103.57x = 1,522.92 × 637.82
4. Step 4: Simplify right side
   1,103.57x = 971,348.83
5. Step 5: Solve for x
   x = 971,348.83/1,103.57
6. Step 6: Final answer
   x = 880.19