Finding the Fourth Proportional to 2,087.20, 2,879.82 and 1,300.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,087.20 : 2,879.82 = 1,300.68 : x
2. Step 2: Convert to fraction form
   2,087.20/2,879.82 = 1,300.68/x
3. Step 3: Cross multiply
   2,087.20x = 2,879.82 × 1,300.68
4. Step 4: Simplify right side
   2,087.20x = 3,745,724.28
5. Step 5: Solve for x
   x = 3,745,724.28/2,087.20
6. Step 6: Final answer
   x = 1,794.62