Finding the Fourth Proportional to 3,108.69, 4,662.98 and 768.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,108.69 : 4,662.98 = 768.69 : x
2. Step 2: Convert to fraction form
   3,108.69/4,662.98 = 768.69/x
3. Step 3: Cross multiply
   3,108.69x = 4,662.98 × 768.69
4. Step 4: Simplify right side
   3,108.69x = 3,584,362.78
5. Step 5: Solve for x
   x = 3,584,362.78/3,108.69
6. Step 6: Final answer
   x = 1,153.02