Finding the Fourth Proportional to 3,978.24, 5,968.98 and 1,786.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,978.24 : 5,968.98 = 1,786.38 : x
2. Step 2: Convert to fraction form
   3,978.24/5,968.98 = 1,786.38/x
3. Step 3: Cross multiply
   3,978.24x = 5,968.98 × 1,786.38
4. Step 4: Simplify right side
   3,978.24x = 10,662,866.49
5. Step 5: Solve for x
   x = 10,662,866.49/3,978.24
6. Step 6: Final answer
   x = 2,680.30