Finding the Fourth Proportional to 3,506.72, 5,258.48 and 1,040.67

Step by Step Solution

1. Step 1: Write the proportion equation
   3,506.72 : 5,258.48 = 1,040.67 : x
2. Step 2: Convert to fraction form
   3,506.72/5,258.48 = 1,040.67/x
3. Step 3: Cross multiply
   3,506.72x = 5,258.48 × 1,040.67
4. Step 4: Simplify right side
   3,506.72x = 5,472,337.18
5. Step 5: Solve for x
   x = 5,472,337.18/3,506.72
6. Step 6: Final answer
   x = 1,560.53