Finding the Fourth Proportional to 2,456.83, 3,389.74 and 1,408.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,456.83 : 3,389.74 = 1,408.69 : x
2. Step 2: Convert to fraction form
   2,456.83/3,389.74 = 1,408.69/x
3. Step 3: Cross multiply
   2,456.83x = 3,389.74 × 1,408.69
4. Step 4: Simplify right side
   2,456.83x = 4,775,092.84
5. Step 5: Solve for x
   x = 4,775,092.84/2,456.83
6. Step 6: Final answer
   x = 1,943.60