Finding the Fourth Proportional to 2,010.72, 3,016.41 and 778.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,010.72 : 3,016.41 = 778.02 : x
2. Step 2: Convert to fraction form
   2,010.72/3,016.41 = 778.02/x
3. Step 3: Cross multiply
   2,010.72x = 3,016.41 × 778.02
4. Step 4: Simplify right side
   2,010.72x = 2,346,827.31
5. Step 5: Solve for x
   x = 2,346,827.31/2,010.72
6. Step 6: Final answer
   x = 1,167.16