Finding the Fourth Proportional to 3,485.56, 5,227.42 and 1,019.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,485.56 : 5,227.42 = 1,019.72 : x
2. Step 2: Convert to fraction form
   3,485.56/5,227.42 = 1,019.72/x
3. Step 3: Cross multiply
   3,485.56x = 5,227.42 × 1,019.72
4. Step 4: Simplify right side
   3,485.56x = 5,330,504.72
5. Step 5: Solve for x
   x = 5,330,504.72/3,485.56
6. Step 6: Final answer
   x = 1,529.31