Finding the Fourth Proportional to 3,450.72, 5,177.04 and 1,142.28

Step by Step Solution

1. Step 1: Write the proportion equation
   3,450.72 : 5,177.04 = 1,142.28 : x
2. Step 2: Convert to fraction form
   3,450.72/5,177.04 = 1,142.28/x
3. Step 3: Cross multiply
   3,450.72x = 5,177.04 × 1,142.28
4. Step 4: Simplify right side
   3,450.72x = 5,913,629.25
5. Step 5: Solve for x
   x = 5,913,629.25/3,450.72
6. Step 6: Final answer
   x = 1,713.74