Finding the Fourth Proportional to 2,540.27, 3,810.53 and 786.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,540.27 : 3,810.53 = 786.49 : x
2. Step 2: Convert to fraction form
   2,540.27/3,810.53 = 786.49/x
3. Step 3: Cross multiply
   2,540.27x = 3,810.53 × 786.49
4. Step 4: Simplify right side
   2,540.27x = 2,996,936.18
5. Step 5: Solve for x
   x = 2,996,936.18/2,540.27
6. Step 6: Final answer
   x = 1,179.77