Finding the Fourth Proportional to 2,643.39, 3,962.37 and 1,082.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,643.39 : 3,962.37 = 1,082.73 : x
2. Step 2: Convert to fraction form
   2,643.39/3,962.37 = 1,082.73/x
3. Step 3: Cross multiply
   2,643.39x = 3,962.37 × 1,082.73
4. Step 4: Simplify right side
   2,643.39x = 4,290,176.87
5. Step 5: Solve for x
   x = 4,290,176.87/2,643.39
6. Step 6: Final answer
   x = 1,622.98