Finding the Fourth Proportional to 2,587.67, 3,570.87 and 1,408.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,587.67 : 3,570.87 = 1,408.74 : x
2. Step 2: Convert to fraction form
   2,587.67/3,570.87 = 1,408.74/x
3. Step 3: Cross multiply
   2,587.67x = 3,570.87 × 1,408.74
4. Step 4: Simplify right side
   2,587.67x = 5,030,427.40
5. Step 5: Solve for x
   x = 5,030,427.40/2,587.67
6. Step 6: Final answer
   x = 1,944.00