Finding the Fourth Proportional to 2,007.72, 3,012.04 and 775.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,007.72 : 3,012.04 = 775.14 : x
2. Step 2: Convert to fraction form
   2,007.72/3,012.04 = 775.14/x
3. Step 3: Cross multiply
   2,007.72x = 3,012.04 × 775.14
4. Step 4: Simplify right side
   2,007.72x = 2,334,752.69
5. Step 5: Solve for x
   x = 2,334,752.69/2,007.72
6. Step 6: Final answer
   x = 1,162.89