Finding the Fourth Proportional to 2,469.42, 3,408.39 and 1,422.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,469.42 : 3,408.39 = 1,422.09 : x
2. Step 2: Convert to fraction form
   2,469.42/3,408.39 = 1,422.09/x
3. Step 3: Cross multiply
   2,469.42x = 3,408.39 × 1,422.09
4. Step 4: Simplify right side
   2,469.42x = 4,847,037.34
5. Step 5: Solve for x
   x = 4,847,037.34/2,469.42
6. Step 6: Final answer
   x = 1,962.82