Finding the Fourth Proportional to 2,615.27, 3,609 and 1,436.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,615.27 : 3,609 = 1,436.31 : x
2. Step 2: Convert to fraction form
   2,615.27/3,609 = 1,436.31/x
3. Step 3: Cross multiply
   2,615.27x = 3,609 × 1,436.31
4. Step 4: Simplify right side
   2,615.27x = 5,183,642.79
5. Step 5: Solve for x
   x = 5,183,642.79/2,615.27
6. Step 6: Final answer
   x = 1,982.07