Finding the Fourth Proportional to 2,086.72, 2,879.46 and 1,202.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086.72 : 2,879.46 = 1,202.35 : x
2. Step 2: Convert to fraction form
   2,086.72/2,879.46 = 1,202.35/x
3. Step 3: Cross multiply
   2,086.72x = 2,879.46 × 1,202.35
4. Step 4: Simplify right side
   2,086.72x = 3,462,118.73
5. Step 5: Solve for x
   x = 3,462,118.73/2,086.72
6. Step 6: Final answer
   x = 1,659.12