Finding the Fourth Proportional to 2,085.83, 2,879.17 and 1,201.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,085.83 : 2,879.17 = 1,201.98 : x
2. Step 2: Convert to fraction form
   2,085.83/2,879.17 = 1,201.98/x
3. Step 3: Cross multiply
   2,085.83x = 2,879.17 × 1,201.98
4. Step 4: Simplify right side
   2,085.83x = 3,460,704.76
5. Step 5: Solve for x
   x = 3,460,704.76/2,085.83
6. Step 6: Final answer
   x = 1,659.15