Finding the Fourth Proportional to 2,208.25, 3,309.94 and 1,426.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,208.25 : 3,309.94 = 1,426.40 : x
2. Step 2: Convert to fraction form
   2,208.25/3,309.94 = 1,426.40/x
3. Step 3: Cross multiply
   2,208.25x = 3,309.94 × 1,426.40
4. Step 4: Simplify right side
   2,208.25x = 4,721,298.42
5. Step 5: Solve for x
   x = 4,721,298.42/2,208.25
6. Step 6: Final answer
   x = 2,138.03