Finding the Fourth Proportional to 2,613.22, 3,606.15 and 1,434.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,613.22 : 3,606.15 = 1,434.40 : x
2. Step 2: Convert to fraction form
   2,613.22/3,606.15 = 1,434.40/x
3. Step 3: Cross multiply
   2,613.22x = 3,606.15 × 1,434.40
4. Step 4: Simplify right side
   2,613.22x = 5,172,661.56
5. Step 5: Solve for x
   x = 5,172,661.56/2,613.22
6. Step 6: Final answer
   x = 1,979.42