Finding the Fourth Proportional to 2,408.33, 3,320.57 and 1,661.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,408.33 : 3,320.57 = 1,661.10 : x
2. Step 2: Convert to fraction form
   2,408.33/3,320.57 = 1,661.10/x
3. Step 3: Cross multiply
   2,408.33x = 3,320.57 × 1,661.10
4. Step 4: Simplify right side
   2,408.33x = 5,515,802.98
5. Step 5: Solve for x
   x = 5,515,802.98/2,408.33
6. Step 6: Final answer
   x = 2,290.31