Finding the Fourth Proportional to 1,605.72, 2,411.94 and 1,426.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,605.72 : 2,411.94 = 1,426.92 : x
2. Step 2: Convert to fraction form
   1,605.72/2,411.94 = 1,426.92/x
3. Step 3: Cross multiply
   1,605.72x = 2,411.94 × 1,426.92
4. Step 4: Simplify right side
   1,605.72x = 3,441,645.42
5. Step 5: Solve for x
   x = 3,441,645.42/1,605.72
6. Step 6: Final answer
   x = 2,143.37