Finding the Fourth Proportional to 2,613.17, 3,606.16 and 1,434.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,613.17 : 3,606.16 = 1,434.21 : x
2. Step 2: Convert to fraction form
   2,613.17/3,606.16 = 1,434.21/x
3. Step 3: Cross multiply
   2,613.17x = 3,606.16 × 1,434.21
4. Step 4: Simplify right side
   2,613.17x = 5,171,990.73
5. Step 5: Solve for x
   x = 5,171,990.73/2,613.17
6. Step 6: Final answer
   x = 1,979.20