Finding the Fourth Proportional to 3,144.78, 4,717.35 and 1,064.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,144.78 : 4,717.35 = 1,064.61 : x
2. Step 2: Convert to fraction form
   3,144.78/4,717.35 = 1,064.61/x
3. Step 3: Cross multiply
   3,144.78x = 4,717.35 × 1,064.61
4. Step 4: Simplify right side
   3,144.78x = 5,022,137.98
5. Step 5: Solve for x
   x = 5,022,137.98/3,144.78
6. Step 6: Final answer
   x = 1,596.98