Finding the Fourth Proportional to 2,609.43, 3,912.12 and 1,292.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,609.43 : 3,912.12 = 1,292.28 : x
2. Step 2: Convert to fraction form
   2,609.43/3,912.12 = 1,292.28/x
3. Step 3: Cross multiply
   2,609.43x = 3,912.12 × 1,292.28
4. Step 4: Simplify right side
   2,609.43x = 5,055,554.43
5. Step 5: Solve for x
   x = 5,055,554.43/2,609.43
6. Step 6: Final answer
   x = 1,937.42