Finding the Fourth Proportional to 2,587.62, 3,568.98 and 1,642.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,587.62 : 3,568.98 = 1,642.59 : x
2. Step 2: Convert to fraction form
   2,587.62/3,568.98 = 1,642.59/x
3. Step 3: Cross multiply
   2,587.62x = 3,568.98 × 1,642.59
4. Step 4: Simplify right side
   2,587.62x = 5,862,363.63
5. Step 5: Solve for x
   x = 5,862,363.63/2,587.62
6. Step 6: Final answer
   x = 2,265.55