Finding the Fourth Proportional to 1,103.33, 1,522.91 and 637.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,103.33 : 1,522.91 = 637.49 : x
2. Step 2: Convert to fraction form
   1,103.33/1,522.91 = 637.49/x
3. Step 3: Cross multiply
   1,103.33x = 1,522.91 × 637.49
4. Step 4: Simplify right side
   1,103.33x = 970,839.90
5. Step 5: Solve for x
   x = 970,839.90/1,103.33
6. Step 6: Final answer
   x = 879.92