Finding the Fourth Proportional to 3,144.72, 4,717.35 and 1,064.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,144.72 : 4,717.35 = 1,064.78 : x
2. Step 2: Convert to fraction form
   3,144.72/4,717.35 = 1,064.78/x
3. Step 3: Cross multiply
   3,144.72x = 4,717.35 × 1,064.78
4. Step 4: Simplify right side
   3,144.72x = 5,022,916.35
5. Step 5: Solve for x
   x = 5,022,916.35/3,144.72
6. Step 6: Final answer
   x = 1,597.25