Finding the Fourth Proportional to 3,983.85, 5,978.61 and 1,794.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,983.85 : 5,978.61 = 1,794.42 : x
2. Step 2: Convert to fraction form
   3,983.85/5,978.61 = 1,794.42/x
3. Step 3: Cross multiply
   3,983.85x = 5,978.61 × 1,794.42
4. Step 4: Simplify right side
   3,983.85x = 10,728,137.36
5. Step 5: Solve for x
   x = 10,728,137.36/3,983.85
6. Step 6: Final answer
   x = 2,692.91