Finding the Fourth Proportional to 3,727.46, 5,145.82 and 2,931.28

Step by Step Solution

1. Step 1: Write the proportion equation
   3,727.46 : 5,145.82 = 2,931.28 : x
2. Step 2: Convert to fraction form
   3,727.46/5,145.82 = 2,931.28/x
3. Step 3: Cross multiply
   3,727.46x = 5,145.82 × 2,931.28
4. Step 4: Simplify right side
   3,727.46x = 15,083,839.25
5. Step 5: Solve for x
   x = 15,083,839.25/3,727.46
6. Step 6: Final answer
   x = 4,046.68