Finding the Fourth Proportional to 1,866.27, 2,573.87 and 1,587.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,866.27 : 2,573.87 = 1,587.41 : x
2. Step 2: Convert to fraction form
   1,866.27/2,573.87 = 1,587.41/x
3. Step 3: Cross multiply
   1,866.27x = 2,573.87 × 1,587.41
4. Step 4: Simplify right side
   1,866.27x = 4,085,766.17
5. Step 5: Solve for x
   x = 4,085,766.17/1,866.27
6. Step 6: Final answer
   x = 2,189.27