Finding the Fourth Proportional to 2,615.59, 3,609.40 and 1,436.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,615.59 : 3,609.40 = 1,436.58 : x
2. Step 2: Convert to fraction form
   2,615.59/3,609.40 = 1,436.58/x
3. Step 3: Cross multiply
   2,615.59x = 3,609.40 × 1,436.58
4. Step 4: Simplify right side
   2,615.59x = 5,185,191.85
5. Step 5: Solve for x
   x = 5,185,191.85/2,615.59
6. Step 6: Final answer
   x = 1,982.42