Finding the Fourth Proportional to 3,144.31, 4,716.50 and 1,064.79

Step by Step Solution

1. Step 1: Write the proportion equation
   3,144.31 : 4,716.50 = 1,064.79 : x
2. Step 2: Convert to fraction form
   3,144.31/4,716.50 = 1,064.79/x
3. Step 3: Cross multiply
   3,144.31x = 4,716.50 × 1,064.79
4. Step 4: Simplify right side
   3,144.31x = 5,022,076.71
5. Step 5: Solve for x
   x = 5,022,076.71/3,144.31
6. Step 6: Final answer
   x = 1,597.20