Finding the Fourth Proportional to 2,399.77, 3,307.90 and 1,768.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,399.77 : 3,307.90 = 1,768.28 : x
2. Step 2: Convert to fraction form
   2,399.77/3,307.90 = 1,768.28/x
3. Step 3: Cross multiply
   2,399.77x = 3,307.90 × 1,768.28
4. Step 4: Simplify right side
   2,399.77x = 5,849,284.57
5. Step 5: Solve for x
   x = 5,849,284.57/2,399.77
6. Step 6: Final answer
   x = 2,437.44