Finding the Fourth Proportional to 2,008.69, 3,011.29 and 776.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,008.69 : 3,011.29 = 776.99 : x
2. Step 2: Convert to fraction form
   2,008.69/3,011.29 = 776.99/x
3. Step 3: Cross multiply
   2,008.69x = 3,011.29 × 776.99
4. Step 4: Simplify right side
   2,008.69x = 2,339,747.80
5. Step 5: Solve for x
   x = 2,339,747.80/2,008.69
6. Step 6: Final answer
   x = 1,164.81