Finding the Fourth Proportional to 2,587.57, 3,570.75 and 1,408.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,587.57 : 3,570.75 = 1,408.61 : x
2. Step 2: Convert to fraction form
   2,587.57/3,570.75 = 1,408.61/x
3. Step 3: Cross multiply
   2,587.57x = 3,570.75 × 1,408.61
4. Step 4: Simplify right side
   2,587.57x = 5,029,794.16
5. Step 5: Solve for x
   x = 5,029,794.16/2,587.57
6. Step 6: Final answer
   x = 1,943.83