Finding the Fourth Proportional to 2,086.31, 2,879.03 and 1,246.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086.31 : 2,879.03 = 1,246.82 : x
2. Step 2: Convert to fraction form
   2,086.31/2,879.03 = 1,246.82/x
3. Step 3: Cross multiply
   2,086.31x = 2,879.03 × 1,246.82
4. Step 4: Simplify right side
   2,086.31x = 3,589,627.25
5. Step 5: Solve for x
   x = 3,589,627.25/2,086.31
6. Step 6: Final answer
   x = 1,720.57