Finding the Fourth Proportional to 2,488.66, 3,434.38 and 1,426.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,488.66 : 3,434.38 = 1,426.47 : x
2. Step 2: Convert to fraction form
   2,488.66/3,434.38 = 1,426.47/x
3. Step 3: Cross multiply
   2,488.66x = 3,434.38 × 1,426.47
4. Step 4: Simplify right side
   2,488.66x = 4,899,036.47
5. Step 5: Solve for x
   x = 4,899,036.47/2,488.66
6. Step 6: Final answer
   x = 1,968.55