Finding the Fourth Proportional to 2,016.04, 2,780.90 and 1,229.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,016.04 : 2,780.90 = 1,229.80 : x
2. Step 2: Convert to fraction form
   2,016.04/2,780.90 = 1,229.80/x
3. Step 3: Cross multiply
   2,016.04x = 2,780.90 × 1,229.80
4. Step 4: Simplify right side
   2,016.04x = 3,419,950.82
5. Step 5: Solve for x
   x = 3,419,950.82/2,016.04
6. Step 6: Final answer
   x = 1,696.37