Finding the Fourth Proportional to 1,103.10, 1,522.59 and 771.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,103.10 : 1,522.59 = 771.62 : x
2. Step 2: Convert to fraction form
   1,103.10/1,522.59 = 771.62/x
3. Step 3: Cross multiply
   1,103.10x = 1,522.59 × 771.62
4. Step 4: Simplify right side
   1,103.10x = 1,174,853.28
5. Step 5: Solve for x
   x = 1,174,853.28/1,103.10
6. Step 6: Final answer
   x = 1,065.05