Finding the Fourth Proportional to 2,398.33, 3,311.22 and 1,643.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,398.33 : 3,311.22 = 1,643.39 : x
2. Step 2: Convert to fraction form
   2,398.33/3,311.22 = 1,643.39/x
3. Step 3: Cross multiply
   2,398.33x = 3,311.22 × 1,643.39
4. Step 4: Simplify right side
   2,398.33x = 5,441,618.62
5. Step 5: Solve for x
   x = 5,441,618.62/2,398.33
6. Step 6: Final answer
   x = 2,268.92