Finding the Fourth Proportional to 2,613.31, 3,606.28 and 1,434.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,613.31 : 3,606.28 = 1,434.35 : x
2. Step 2: Convert to fraction form
   2,613.31/3,606.28 = 1,434.35/x
3. Step 3: Cross multiply
   2,613.31x = 3,606.28 × 1,434.35
4. Step 4: Simplify right side
   2,613.31x = 5,172,642.51
5. Step 5: Solve for x
   x = 5,172,642.51/2,613.31
6. Step 6: Final answer
   x = 1,979.35