Finding the Fourth Proportional to 2,411.67, 3,617.94 and 768.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,411.67 : 3,617.94 = 768.05 : x
2. Step 2: Convert to fraction form
   2,411.67/3,617.94 = 768.05/x
3. Step 3: Cross multiply
   2,411.67x = 3,617.94 × 768.05
4. Step 4: Simplify right side
   2,411.67x = 2,778,740.73
5. Step 5: Solve for x
   x = 2,778,740.73/2,411.67
6. Step 6: Final answer
   x = 1,152.21