Finding the Fourth Proportional to 2,614.31, 3,920.31 and 1,228.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,614.31 : 3,920.31 = 1,228.04 : x
2. Step 2: Convert to fraction form
   2,614.31/3,920.31 = 1,228.04/x
3. Step 3: Cross multiply
   2,614.31x = 3,920.31 × 1,228.04
4. Step 4: Simplify right side
   2,614.31x = 4,814,297.49
5. Step 5: Solve for x
   x = 4,814,297.49/2,614.31
6. Step 6: Final answer
   x = 1,841.52