Finding the Fourth Proportional to 2,456.84, 3,389.19 and 1,408.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,456.84 : 3,389.19 = 1,408.25 : x
2. Step 2: Convert to fraction form
   2,456.84/3,389.19 = 1,408.25/x
3. Step 3: Cross multiply
   2,456.84x = 3,389.19 × 1,408.25
4. Step 4: Simplify right side
   2,456.84x = 4,772,826.82
5. Step 5: Solve for x
   x = 4,772,826.82/2,456.84
6. Step 6: Final answer
   x = 1,942.67