Finding the Fourth Proportional to 1,449.27, 1,999.61 and 859.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,449.27 : 1,999.61 = 859.54 : x
2. Step 2: Convert to fraction form
   1,449.27/1,999.61 = 859.54/x
3. Step 3: Cross multiply
   1,449.27x = 1,999.61 × 859.54
4. Step 4: Simplify right side
   1,449.27x = 1,718,744.78
5. Step 5: Solve for x
   x = 1,718,744.78/1,449.27
6. Step 6: Final answer
   x = 1,185.94