Finding the Fourth Proportional to 2,409.30, 3,609.90 and 1,587.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,409.30 : 3,609.90 = 1,587.15 : x
2. Step 2: Convert to fraction form
   2,409.30/3,609.90 = 1,587.15/x
3. Step 3: Cross multiply
   2,409.30x = 3,609.90 × 1,587.15
4. Step 4: Simplify right side
   2,409.30x = 5,729,452.79
5. Step 5: Solve for x
   x = 5,729,452.79/2,409.30
6. Step 6: Final answer
   x = 2,378.06