Finding the Fourth Proportional to 3,392.72, 5,087.12 and 1,052.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,392.72 : 5,087.12 = 1,052.12 : x
2. Step 2: Convert to fraction form
   3,392.72/5,087.12 = 1,052.12/x
3. Step 3: Cross multiply
   3,392.72x = 5,087.12 × 1,052.12
4. Step 4: Simplify right side
   3,392.72x = 5,352,237.89
5. Step 5: Solve for x
   x = 5,352,237.89/3,392.72
6. Step 6: Final answer
   x = 1,577.57