Finding the Fourth Proportional to 2,066.27, 3,099.69 and 767.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,066.27 : 3,099.69 = 767.63 : x
2. Step 2: Convert to fraction form
   2,066.27/3,099.69 = 767.63/x
3. Step 3: Cross multiply
   2,066.27x = 3,099.69 × 767.63
4. Step 4: Simplify right side
   2,066.27x = 2,379,399.54
5. Step 5: Solve for x
   x = 2,379,399.54/2,066.27
6. Step 6: Final answer
   x = 1,151.55