Finding the Fourth Proportional to 2,055.31, 3,081.12 and 755.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,055.31 : 3,081.12 = 755.87 : x
2. Step 2: Convert to fraction form
   2,055.31/3,081.12 = 755.87/x
3. Step 3: Cross multiply
   2,055.31x = 3,081.12 × 755.87
4. Step 4: Simplify right side
   2,055.31x = 2,328,926.17
5. Step 5: Solve for x
   x = 2,328,926.17/2,055.31
6. Step 6: Final answer
   x = 1,133.13