Finding the Fourth Proportional to 1,864.27, 2,571.67 and 1,155.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,864.27 : 2,571.67 = 1,155.87 : x
2. Step 2: Convert to fraction form
   1,864.27/2,571.67 = 1,155.87/x
3. Step 3: Cross multiply
   1,864.27x = 2,571.67 × 1,155.87
4. Step 4: Simplify right side
   1,864.27x = 2,972,520.90
5. Step 5: Solve for x
   x = 2,972,520.90/1,864.27
6. Step 6: Final answer
   x = 1,594.47