Finding the Fourth Proportional to 1,103.90, 1,522.50 and 710.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,103.90 : 1,522.50 = 710.96 : x
2. Step 2: Convert to fraction form
   1,103.90/1,522.50 = 710.96/x
3. Step 3: Cross multiply
   1,103.90x = 1,522.50 × 710.96
4. Step 4: Simplify right side
   1,103.90x = 1,082,436.60
5. Step 5: Solve for x
   x = 1,082,436.60/1,103.90
6. Step 6: Final answer
   x = 980.56