Finding the Fourth Proportional to 1,103.58, 1,522.92 and 711.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,103.58 : 1,522.92 = 711.30 : x
2. Step 2: Convert to fraction form
   1,103.58/1,522.92 = 711.30/x
3. Step 3: Cross multiply
   1,103.58x = 1,522.92 × 711.30
4. Step 4: Simplify right side
   1,103.58x = 1,083,253.00
5. Step 5: Solve for x
   x = 1,083,253.00/1,103.58
6. Step 6: Final answer
   x = 981.58