Finding the Fourth Proportional to 1,103.10, 1,522.27 and 637.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,103.10 : 1,522.27 = 637.35 : x
2. Step 2: Convert to fraction form
   1,103.10/1,522.27 = 637.35/x
3. Step 3: Cross multiply
   1,103.10x = 1,522.27 × 637.35
4. Step 4: Simplify right side
   1,103.10x = 970,218.78
5. Step 5: Solve for x
   x = 970,218.78/1,103.10
6. Step 6: Final answer
   x = 879.54