Finding the Fourth Proportional to 2,249.96, 3,373.89 and 768.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,249.96 : 3,373.89 = 768.78 : x
2. Step 2: Convert to fraction form
   2,249.96/3,373.89 = 768.78/x
3. Step 3: Cross multiply
   2,249.96x = 3,373.89 × 768.78
4. Step 4: Simplify right side
   2,249.96x = 2,593,779.15
5. Step 5: Solve for x
   x = 2,593,779.15/2,249.96
6. Step 6: Final answer
   x = 1,152.81