Finding the Fourth Proportional to 2,055.12, 3,081.24 and 756.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,055.12 : 3,081.24 = 756.42 : x
2. Step 2: Convert to fraction form
   2,055.12/3,081.24 = 756.42/x
3. Step 3: Cross multiply
   2,055.12x = 3,081.24 × 756.42
4. Step 4: Simplify right side
   2,055.12x = 2,330,711.56
5. Step 5: Solve for x
   x = 2,330,711.56/2,055.12
6. Step 6: Final answer
   x = 1,134.10