Finding the Fourth Proportional to 2,615.14, 3,608.91 and 1,436.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,615.14 : 3,608.91 = 1,436.20 : x
2. Step 2: Convert to fraction form
   2,615.14/3,608.91 = 1,436.20/x
3. Step 3: Cross multiply
   2,615.14x = 3,608.91 × 1,436.20
4. Step 4: Simplify right side
   2,615.14x = 5,183,116.54
5. Step 5: Solve for x
   x = 5,183,116.54/2,615.14
6. Step 6: Final answer
   x = 1,981.97