Finding the Fourth Proportional to 1,515.50, 2,088.18 and 1,411.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,515.50 : 2,088.18 = 1,411.61 : x
2. Step 2: Convert to fraction form
   1,515.50/2,088.18 = 1,411.61/x
3. Step 3: Cross multiply
   1,515.50x = 2,088.18 × 1,411.61
4. Step 4: Simplify right side
   1,515.50x = 2,947,685.33
5. Step 5: Solve for x
   x = 2,947,685.33/1,515.50
6. Step 6: Final answer
   x = 1,945.03