Finding the Fourth Proportional to 2,231.15, 3,079.34 and 2,132.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,231.15 : 3,079.34 = 2,132.72 : x
2. Step 2: Convert to fraction form
   2,231.15/3,079.34 = 2,132.72/x
3. Step 3: Cross multiply
   2,231.15x = 3,079.34 × 2,132.72
4. Step 4: Simplify right side
   2,231.15x = 6,567,359.94
5. Step 5: Solve for x
   x = 6,567,359.94/2,231.15
6. Step 6: Final answer
   x = 2,943.49