Finding the Fourth Proportional to 2,087.18, 2,879.72 and 1,202.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,087.18 : 2,879.72 = 1,202.81 : x
2. Step 2: Convert to fraction form
   2,087.18/2,879.72 = 1,202.81/x
3. Step 3: Cross multiply
   2,087.18x = 2,879.72 × 1,202.81
4. Step 4: Simplify right side
   2,087.18x = 3,463,760.21
5. Step 5: Solve for x
   x = 3,463,760.21/2,087.18
6. Step 6: Final answer
   x = 1,659.54