Finding the Fourth Proportional to 3,505.22, 5,258.38 and 1,040.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,505.22 : 5,258.38 = 1,040.42 : x
2. Step 2: Convert to fraction form
   3,505.22/5,258.38 = 1,040.42/x
3. Step 3: Cross multiply
   3,505.22x = 5,258.38 × 1,040.42
4. Step 4: Simplify right side
   3,505.22x = 5,470,923.72
5. Step 5: Solve for x
   x = 5,470,923.72/3,505.22
6. Step 6: Final answer
   x = 1,560.79