Finding the Fourth Proportional to 2,010.65, 3,016.82 and 778.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,010.65 : 3,016.82 = 778.92 : x
2. Step 2: Convert to fraction form
   2,010.65/3,016.82 = 778.92/x
3. Step 3: Cross multiply
   2,010.65x = 3,016.82 × 778.92
4. Step 4: Simplify right side
   2,010.65x = 2,349,857.54
5. Step 5: Solve for x
   x = 2,349,857.54/2,010.65
6. Step 6: Final answer
   x = 1,168.71