Finding the Fourth Proportional to 3,388.97, 5,081.82 and 1,983.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,388.97 : 5,081.82 = 1,983.78 : x
2. Step 2: Convert to fraction form
   3,388.97/5,081.82 = 1,983.78/x
3. Step 3: Cross multiply
   3,388.97x = 5,081.82 × 1,983.78
4. Step 4: Simplify right side
   3,388.97x = 10,081,212.88
5. Step 5: Solve for x
   x = 10,081,212.88/3,388.97
6. Step 6: Final answer
   x = 2,974.72