Finding the Fourth Proportional to 2,014.72, 2,780.49 and 1,229.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,014.72 : 2,780.49 = 1,229.20 : x
2. Step 2: Convert to fraction form
   2,014.72/2,780.49 = 1,229.20/x
3. Step 3: Cross multiply
   2,014.72x = 2,780.49 × 1,229.20
4. Step 4: Simplify right side
   2,014.72x = 3,417,778.31
5. Step 5: Solve for x
   x = 3,417,778.31/2,014.72
6. Step 6: Final answer
   x = 1,696.40