Finding the Fourth Proportional to 2,587.82, 3,571.20 and 1,408.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,587.82 : 3,571.20 = 1,408.89 : x
2. Step 2: Convert to fraction form
   2,587.82/3,571.20 = 1,408.89/x
3. Step 3: Cross multiply
   2,587.82x = 3,571.20 × 1,408.89
4. Step 4: Simplify right side
   2,587.82x = 5,031,427.97
5. Step 5: Solve for x
   x = 5,031,427.97/2,587.82
6. Step 6: Final answer
   x = 1,944.27