Finding the Fourth Proportional to 2,276.40, 3,412.17 and 1,626.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,276.40 : 3,412.17 = 1,626.78 : x
2. Step 2: Convert to fraction form
   2,276.40/3,412.17 = 1,626.78/x
3. Step 3: Cross multiply
   2,276.40x = 3,412.17 × 1,626.78
4. Step 4: Simplify right side
   2,276.40x = 5,550,849.91
5. Step 5: Solve for x
   x = 5,550,849.91/2,276.40
6. Step 6: Final answer
   x = 2,438.43