Finding the Fourth Proportional to 2,488.87, 3,434.54 and 1,426.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,488.87 : 3,434.54 = 1,426.55 : x
2. Step 2: Convert to fraction form
   2,488.87/3,434.54 = 1,426.55/x
3. Step 3: Cross multiply
   2,488.87x = 3,434.54 × 1,426.55
4. Step 4: Simplify right side
   2,488.87x = 4,899,529.43
5. Step 5: Solve for x
   x = 4,899,529.43/2,488.87
6. Step 6: Final answer
   x = 1,968.58