Finding the Fourth Proportional to 2,615.22, 3,609.02 and 1,436.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,615.22 : 3,609.02 = 1,436.31 : x
2. Step 2: Convert to fraction form
   2,615.22/3,609.02 = 1,436.31/x
3. Step 3: Cross multiply
   2,615.22x = 3,609.02 × 1,436.31
4. Step 4: Simplify right side
   2,615.22x = 5,183,671.52
5. Step 5: Solve for x
   x = 5,183,671.52/2,615.22
6. Step 6: Final answer
   x = 1,982.12