Finding the Fourth Proportional to 3,723.54, 5,581.41 and 1,257.51

Step by Step Solution

1. Step 1: Write the proportion equation
   3,723.54 : 5,581.41 = 1,257.51 : x
2. Step 2: Convert to fraction form
   3,723.54/5,581.41 = 1,257.51/x
3. Step 3: Cross multiply
   3,723.54x = 5,581.41 × 1,257.51
4. Step 4: Simplify right side
   3,723.54x = 7,018,678.89
5. Step 5: Solve for x
   x = 7,018,678.89/3,723.54
6. Step 6: Final answer
   x = 1,884.95