Finding the Fourth Proportional to 3,485.67, 5,229.59 and 1,020.54

Step by Step Solution

1. Step 1: Write the proportion equation
   3,485.67 : 5,229.59 = 1,020.54 : x
2. Step 2: Convert to fraction form
   3,485.67/5,229.59 = 1,020.54/x
3. Step 3: Cross multiply
   3,485.67x = 5,229.59 × 1,020.54
4. Step 4: Simplify right side
   3,485.67x = 5,337,005.78
5. Step 5: Solve for x
   x = 5,337,005.78/3,485.67
6. Step 6: Final answer
   x = 1,531.13