Finding the Fourth Proportional to 2,456.22, 3,389.46 and 1,393.97

Step by Step Solution

1. Step 1: Write the proportion equation
   2,456.22 : 3,389.46 = 1,393.97 : x
2. Step 2: Convert to fraction form
   2,456.22/3,389.46 = 1,393.97/x
3. Step 3: Cross multiply
   2,456.22x = 3,389.46 × 1,393.97
4. Step 4: Simplify right side
   2,456.22x = 4,724,788.61
5. Step 5: Solve for x
   x = 4,724,788.61/2,456.22
6. Step 6: Final answer
   x = 1,923.60