Finding the Fourth Proportional to 3,007.72, 4,150.81 and 1,681.35

Step by Step Solution

1. Step 1: Write the proportion equation
   3,007.72 : 4,150.81 = 1,681.35 : x
2. Step 2: Convert to fraction form
   3,007.72/4,150.81 = 1,681.35/x
3. Step 3: Cross multiply
   3,007.72x = 4,150.81 × 1,681.35
4. Step 4: Simplify right side
   3,007.72x = 6,978,964.39
5. Step 5: Solve for x
   x = 6,978,964.39/3,007.72
6. Step 6: Final answer
   x = 2,320.35