Finding the Fourth Proportional to 2,086.29, 2,878.79 and 1,201.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086.29 : 2,878.79 = 1,201.92 : x
2. Step 2: Convert to fraction form
   2,086.29/2,878.79 = 1,201.92/x
3. Step 3: Cross multiply
   2,086.29x = 2,878.79 × 1,201.92
4. Step 4: Simplify right side
   2,086.29x = 3,460,069.27
5. Step 5: Solve for x
   x = 3,460,069.27/2,086.29
6. Step 6: Final answer
   x = 1,658.48