Finding the Fourth Proportional to 2,615.60, 3,609.75 and 1,436.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,615.60 : 3,609.75 = 1,436.88 : x
2. Step 2: Convert to fraction form
   2,615.60/3,609.75 = 1,436.88/x
3. Step 3: Cross multiply
   2,615.60x = 3,609.75 × 1,436.88
4. Step 4: Simplify right side
   2,615.60x = 5,186,777.58
5. Step 5: Solve for x
   x = 5,186,777.58/2,615.60
6. Step 6: Final answer
   x = 1,983.02