Finding the Fourth Proportional to 2,481.57, 3,723.83 and 921.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,481.57 : 3,723.83 = 921.71 : x
2. Step 2: Convert to fraction form
   2,481.57/3,723.83 = 921.71/x
3. Step 3: Cross multiply
   2,481.57x = 3,723.83 × 921.71
4. Step 4: Simplify right side
   2,481.57x = 3,432,304.69
5. Step 5: Solve for x
   x = 3,432,304.69/2,481.57
6. Step 6: Final answer
   x = 1,383.12