Finding the Fourth Proportional to 2,016.48, 2,781.06 and 1,229.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,016.48 : 2,781.06 = 1,229.96 : x
2. Step 2: Convert to fraction form
   2,016.48/2,781.06 = 1,229.96/x
3. Step 3: Cross multiply
   2,016.48x = 2,781.06 × 1,229.96
4. Step 4: Simplify right side
   2,016.48x = 3,420,592.56
5. Step 5: Solve for x
   x = 3,420,592.56/2,016.48
6. Step 6: Final answer
   x = 1,696.32