Finding the Fourth Proportional to 3,147.50, 4,721.46 and 1,067.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,147.50 : 4,721.46 = 1,067.72 : x
2. Step 2: Convert to fraction form
   3,147.50/4,721.46 = 1,067.72/x
3. Step 3: Cross multiply
   3,147.50x = 4,721.46 × 1,067.72
4. Step 4: Simplify right side
   3,147.50x = 5,041,173.66
5. Step 5: Solve for x
   x = 5,041,173.66/3,147.50
6. Step 6: Final answer
   x = 1,601.65