Finding the Fourth Proportional to 2,613.12, 3,606.09 and 1,434.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,613.12 : 3,606.09 = 1,434.18 : x
2. Step 2: Convert to fraction form
   2,613.12/3,606.09 = 1,434.18/x
3. Step 3: Cross multiply
   2,613.12x = 3,606.09 × 1,434.18
4. Step 4: Simplify right side
   2,613.12x = 5,171,782.16
5. Step 5: Solve for x
   x = 5,171,782.16/2,613.12
6. Step 6: Final answer
   x = 1,979.16