Finding the Fourth Proportional to 2,615.36, 3,609.18 and 1,436.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,615.36 : 3,609.18 = 1,436.40 : x
2. Step 2: Convert to fraction form
   2,615.36/3,609.18 = 1,436.40/x
3. Step 3: Cross multiply
   2,615.36x = 3,609.18 × 1,436.40
4. Step 4: Simplify right side
   2,615.36x = 5,184,226.15
5. Step 5: Solve for x
   x = 5,184,226.15/2,615.36
6. Step 6: Final answer
   x = 1,982.23