Finding the Fourth Proportional to 2,086.31, 2,879.12 and 1,154.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086.31 : 2,879.12 = 1,154.81 : x
2. Step 2: Convert to fraction form
   2,086.31/2,879.12 = 1,154.81/x
3. Step 3: Cross multiply
   2,086.31x = 2,879.12 × 1,154.81
4. Step 4: Simplify right side
   2,086.31x = 3,324,846.65
5. Step 5: Solve for x
   x = 3,324,846.65/2,086.31
6. Step 6: Final answer
   x = 1,593.65