Finding the Fourth Proportional to 2,587.21, 3,568.25 and 1,590.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,587.21 : 3,568.25 = 1,590.71 : x
2. Step 2: Convert to fraction form
   2,587.21/3,568.25 = 1,590.71/x
3. Step 3: Cross multiply
   2,587.21x = 3,568.25 × 1,590.71
4. Step 4: Simplify right side
   2,587.21x = 5,676,033.12
5. Step 5: Solve for x
   x = 5,676,033.12/2,587.21
6. Step 6: Final answer
   x = 2,193.88