Finding the Fourth Proportional to 3,978.57, 5,966.98 and 1,204.59

Step by Step Solution

1. Step 1: Write the proportion equation
   3,978.57 : 5,966.98 = 1,204.59 : x
2. Step 2: Convert to fraction form
   3,978.57/5,966.98 = 1,204.59/x
3. Step 3: Cross multiply
   3,978.57x = 5,966.98 × 1,204.59
4. Step 4: Simplify right side
   3,978.57x = 7,187,764.44
5. Step 5: Solve for x
   x = 7,187,764.44/3,978.57
6. Step 6: Final answer
   x = 1,806.62