Finding the Fourth Proportional to 1,103.56, 1,522.82 and 637.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,103.56 : 1,522.82 = 637.72 : x
2. Step 2: Convert to fraction form
   1,103.56/1,522.82 = 637.72/x
3. Step 3: Cross multiply
   1,103.56x = 1,522.82 × 637.72
4. Step 4: Simplify right side
   1,103.56x = 971,132.77
5. Step 5: Solve for x
   x = 971,132.77/1,103.56
6. Step 6: Final answer
   x = 880.00