Finding the Fourth Proportional to 2,086.35, 2,879.47 and 1,201.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086.35 : 2,879.47 = 1,201.98 : x
2. Step 2: Convert to fraction form
   2,086.35/2,879.47 = 1,201.98/x
3. Step 3: Cross multiply
   2,086.35x = 2,879.47 × 1,201.98
4. Step 4: Simplify right side
   2,086.35x = 3,461,062.35
5. Step 5: Solve for x
   x = 3,461,062.35/2,086.35
6. Step 6: Final answer
   x = 1,658.91