Finding the Fourth Proportional to 2,342.20, 3,233.82 and 1,643.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,342.20 : 3,233.82 = 1,643.80 : x
2. Step 2: Convert to fraction form
   2,342.20/3,233.82 = 1,643.80/x
3. Step 3: Cross multiply
   2,342.20x = 3,233.82 × 1,643.80
4. Step 4: Simplify right side
   2,342.20x = 5,315,753.32
5. Step 5: Solve for x
   x = 5,315,753.32/2,342.20
6. Step 6: Final answer
   x = 2,269.56