Finding the Fourth Proportional to 2,086.50, 2,879.46 and 1,155

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086.50 : 2,879.46 = 1,155 : x
2. Step 2: Convert to fraction form
   2,086.50/2,879.46 = 1,155/x
3. Step 3: Cross multiply
   2,086.50x = 2,879.46 × 1,155
4. Step 4: Simplify right side
   2,086.50x = 3,325,776.30
5. Step 5: Solve for x
   x = 3,325,776.30/2,086.50
6. Step 6: Final answer
   x = 1,593.95