Finding the Fourth Proportional to 1,103.50, 1,522.83 and 637.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,103.50 : 1,522.83 = 637.75 : x
2. Step 2: Convert to fraction form
   1,103.50/1,522.83 = 637.75/x
3. Step 3: Cross multiply
   1,103.50x = 1,522.83 × 637.75
4. Step 4: Simplify right side
   1,103.50x = 971,184.83
5. Step 5: Solve for x
   x = 971,184.83/1,103.50
6. Step 6: Final answer
   x = 880.10