Finding the Fourth Proportional to 2,016.22, 2,782.69 and 1,230.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,016.22 : 2,782.69 = 1,230.72 : x
2. Step 2: Convert to fraction form
   2,016.22/2,782.69 = 1,230.72/x
3. Step 3: Cross multiply
   2,016.22x = 2,782.69 × 1,230.72
4. Step 4: Simplify right side
   2,016.22x = 3,424,706.08
5. Step 5: Solve for x
   x = 3,424,706.08/2,016.22
6. Step 6: Final answer
   x = 1,698.58