Finding the Fourth Proportional to 2,011.10, 3,016.17 and 778.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,011.10 : 3,016.17 = 778.01 : x
2. Step 2: Convert to fraction form
   2,011.10/3,016.17 = 778.01/x
3. Step 3: Cross multiply
   2,011.10x = 3,016.17 × 778.01
4. Step 4: Simplify right side
   2,011.10x = 2,346,595.34
5. Step 5: Solve for x
   x = 2,346,595.34/2,011.10
6. Step 6: Final answer
   x = 1,166.82