Finding the Fourth Proportional to 1,141.59, 1,711.32 and 1,040.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,141.59 : 1,711.32 = 1,040.15 : x
2. Step 2: Convert to fraction form
   1,141.59/1,711.32 = 1,040.15/x
3. Step 3: Cross multiply
   1,141.59x = 1,711.32 × 1,040.15
4. Step 4: Simplify right side
   1,141.59x = 1,780,029.50
5. Step 5: Solve for x
   x = 1,780,029.50/1,141.59
6. Step 6: Final answer
   x = 1,559.25