Finding the Fourth Proportional to 2,488.21, 3,434.23 and 1,426.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,488.21 : 3,434.23 = 1,426.69 : x
2. Step 2: Convert to fraction form
   2,488.21/3,434.23 = 1,426.69/x
3. Step 3: Cross multiply
   2,488.21x = 3,434.23 × 1,426.69
4. Step 4: Simplify right side
   2,488.21x = 4,899,574.47
5. Step 5: Solve for x
   x = 4,899,574.47/2,488.21
6. Step 6: Final answer
   x = 1,969.12