Finding the Fourth Proportional to 2,007.99, 3,012.53 and 775.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,007.99 : 3,012.53 = 775.98 : x
2. Step 2: Convert to fraction form
   2,007.99/3,012.53 = 775.98/x
3. Step 3: Cross multiply
   2,007.99x = 3,012.53 × 775.98
4. Step 4: Simplify right side
   2,007.99x = 2,337,659.15
5. Step 5: Solve for x
   x = 2,337,659.15/2,007.99
6. Step 6: Final answer
   x = 1,164.18