Finding the Fourth Proportional to 2,403.29, 3,315.20 and 1,408.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,403.29 : 3,315.20 = 1,408.37 : x
2. Step 2: Convert to fraction form
   2,403.29/3,315.20 = 1,408.37/x
3. Step 3: Cross multiply
   2,403.29x = 3,315.20 × 1,408.37
4. Step 4: Simplify right side
   2,403.29x = 4,669,004.61
5. Step 5: Solve for x
   x = 4,669,004.61/2,403.29
6. Step 6: Final answer
   x = 1,942.75