Finding the Fourth Proportional to 2,411.69, 3,617.33 and 768.11

Step by Step Solution

1. Step 1: Write the proportion equation
   2,411.69 : 3,617.33 = 768.11 : x
2. Step 2: Convert to fraction form
   2,411.69/3,617.33 = 768.11/x
3. Step 3: Cross multiply
   2,411.69x = 3,617.33 × 768.11
4. Step 4: Simplify right side
   2,411.69x = 2,778,485.42
5. Step 5: Solve for x
   x = 2,778,485.42/2,411.69
6. Step 6: Final answer
   x = 1,152.09