Finding the Fourth Proportional to 2,399.88, 3,311.82 and 1,352.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,399.88 : 3,311.82 = 1,352.28 : x
2. Step 2: Convert to fraction form
   2,399.88/3,311.82 = 1,352.28/x
3. Step 3: Cross multiply
   2,399.88x = 3,311.82 × 1,352.28
4. Step 4: Simplify right side
   2,399.88x = 4,478,507.95
5. Step 5: Solve for x
   x = 4,478,507.95/2,399.88
6. Step 6: Final answer
   x = 1,866.14