Finding the Fourth Proportional to 2,581.82, 3,561.08 and 1,587.66

Step by Step Solution

1. Step 1: Write the proportion equation
   2,581.82 : 3,561.08 = 1,587.66 : x
2. Step 2: Convert to fraction form
   2,581.82/3,561.08 = 1,587.66/x
3. Step 3: Cross multiply
   2,581.82x = 3,561.08 × 1,587.66
4. Step 4: Simplify right side
   2,581.82x = 5,653,784.27
5. Step 5: Solve for x
   x = 5,653,784.27/2,581.82
6. Step 6: Final answer
   x = 2,189.84