Finding the Fourth Proportional to 2,615.69, 3,609.60 and 1,436.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,615.69 : 3,609.60 = 1,436.74 : x
2. Step 2: Convert to fraction form
   2,615.69/3,609.60 = 1,436.74/x
3. Step 3: Cross multiply
   2,615.69x = 3,609.60 × 1,436.74
4. Step 4: Simplify right side
   2,615.69x = 5,186,042.29
5. Step 5: Solve for x
   x = 5,186,042.29/2,615.69
6. Step 6: Final answer
   x = 1,982.67