Finding the Fourth Proportional to 3,356.28, 5,034.34 and 1,047.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,356.28 : 5,034.34 = 1,047.72 : x
2. Step 2: Convert to fraction form
   3,356.28/5,034.34 = 1,047.72/x
3. Step 3: Cross multiply
   3,356.28x = 5,034.34 × 1,047.72
4. Step 4: Simplify right side
   3,356.28x = 5,274,578.70
5. Step 5: Solve for x
   x = 5,274,578.70/3,356.28
6. Step 6: Final answer
   x = 1,571.56