Finding the Fourth Proportional to 1,587.91, 2,189.60 and 1,083.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,587.91 : 2,189.60 = 1,083.82 : x
2. Step 2: Convert to fraction form
   1,587.91/2,189.60 = 1,083.82/x
3. Step 3: Cross multiply
   1,587.91x = 2,189.60 × 1,083.82
4. Step 4: Simplify right side
   1,587.91x = 2,373,132.27
5. Step 5: Solve for x
   x = 2,373,132.27/1,587.91
6. Step 6: Final answer
   x = 1,494.50