Finding the Fourth Proportional to 3,723.57, 5,586.57 and 1,258.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,723.57 : 5,586.57 = 1,258.61 : x
2. Step 2: Convert to fraction form
   3,723.57/5,586.57 = 1,258.61/x
3. Step 3: Cross multiply
   3,723.57x = 5,586.57 × 1,258.61
4. Step 4: Simplify right side
   3,723.57x = 7,031,284.93
5. Step 5: Solve for x
   x = 7,031,284.93/3,723.57
6. Step 6: Final answer
   x = 1,888.32