Finding the Fourth Proportional to 2,011.72, 3,018.04 and 779.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,011.72 : 3,018.04 = 779.14 : x
2. Step 2: Convert to fraction form
   2,011.72/3,018.04 = 779.14/x
3. Step 3: Cross multiply
   2,011.72x = 3,018.04 × 779.14
4. Step 4: Simplify right side
   2,011.72x = 2,351,475.69
5. Step 5: Solve for x
   x = 2,351,475.69/2,011.72
6. Step 6: Final answer
   x = 1,168.89