Finding the Fourth Proportional to 3,986.55, 5,978.21 and 1,794.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,986.55 : 5,978.21 = 1,794.69 : x
2. Step 2: Convert to fraction form
   3,986.55/5,978.21 = 1,794.69/x
3. Step 3: Cross multiply
   3,986.55x = 5,978.21 × 1,794.69
4. Step 4: Simplify right side
   3,986.55x = 10,729,024.73
5. Step 5: Solve for x
   x = 10,729,024.73/3,986.55
6. Step 6: Final answer
   x = 2,691.31