Finding the Fourth Proportional to 2,227.04, 3,073.28 and 1,218.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,227.04 : 3,073.28 = 1,218.72 : x
2. Step 2: Convert to fraction form
   2,227.04/3,073.28 = 1,218.72/x
3. Step 3: Cross multiply
   2,227.04x = 3,073.28 × 1,218.72
4. Step 4: Simplify right side
   2,227.04x = 3,745,467.80
5. Step 5: Solve for x
   x = 3,745,467.80/2,227.04
6. Step 6: Final answer
   x = 1,681.81