Finding the Fourth Proportional to 2,499.97, 3,749.94 and 768.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,499.97 : 3,749.94 = 768.61 : x
2. Step 2: Convert to fraction form
   2,499.97/3,749.94 = 768.61/x
3. Step 3: Cross multiply
   2,499.97x = 3,749.94 × 768.61
4. Step 4: Simplify right side
   2,499.97x = 2,882,241.38
5. Step 5: Solve for x
   x = 2,882,241.38/2,499.97
6. Step 6: Final answer
   x = 1,152.91