Finding the Fourth Proportional to 3,348.72, 5,022.80 and 1,040

Step by Step Solution

1. Step 1: Write the proportion equation
   3,348.72 : 5,022.80 = 1,040 : x
2. Step 2: Convert to fraction form
   3,348.72/5,022.80 = 1,040/x
3. Step 3: Cross multiply
   3,348.72x = 5,022.80 × 1,040
4. Step 4: Simplify right side
   3,348.72x = 5,223,712
5. Step 5: Solve for x
   x = 5,223,712/3,348.72
6. Step 6: Final answer
   x = 1,559.91