Finding the Fourth Proportional to 2,352.72, 3,528.18 and 892.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,352.72 : 3,528.18 = 892.20 : x
2. Step 2: Convert to fraction form
   2,352.72/3,528.18 = 892.20/x
3. Step 3: Cross multiply
   2,352.72x = 3,528.18 × 892.20
4. Step 4: Simplify right side
   2,352.72x = 3,147,842.20
5. Step 5: Solve for x
   x = 3,147,842.20/2,352.72
6. Step 6: Final answer
   x = 1,337.96