Finding the Fourth Proportional to 2,328.38, 3,491.69 and 768.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,328.38 : 3,491.69 = 768.09 : x
2. Step 2: Convert to fraction form
   2,328.38/3,491.69 = 768.09/x
3. Step 3: Cross multiply
   2,328.38x = 3,491.69 × 768.09
4. Step 4: Simplify right side
   2,328.38x = 2,681,928.33
5. Step 5: Solve for x
   x = 2,681,928.33/2,328.38
6. Step 6: Final answer
   x = 1,151.85