Finding the Fourth Proportional to 1,103.59, 1,522.89 and 841.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,103.59 : 1,522.89 = 841.15 : x
2. Step 2: Convert to fraction form
   1,103.59/1,522.89 = 841.15/x
3. Step 3: Cross multiply
   1,103.59x = 1,522.89 × 841.15
4. Step 4: Simplify right side
   1,103.59x = 1,280,975.12
5. Step 5: Solve for x
   x = 1,280,975.12/1,103.59
6. Step 6: Final answer
   x = 1,160.74