Finding the Fourth Proportional to 2,489.07, 3,434.72 and 1,426.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,489.07 : 3,434.72 = 1,426.82 : x
2. Step 2: Convert to fraction form
   2,489.07/3,434.72 = 1,426.82/x
3. Step 3: Cross multiply
   2,489.07x = 3,434.72 × 1,426.82
4. Step 4: Simplify right side
   2,489.07x = 4,900,739.34
5. Step 5: Solve for x
   x = 4,900,739.34/2,489.07
6. Step 6: Final answer
   x = 1,968.90