Finding the Fourth Proportional to 3,665.43, 5,498.07 and 892.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,665.43 : 5,498.07 = 892.12 : x
2. Step 2: Convert to fraction form
   3,665.43/5,498.07 = 892.12/x
3. Step 3: Cross multiply
   3,665.43x = 5,498.07 × 892.12
4. Step 4: Simplify right side
   3,665.43x = 4,904,938.21
5. Step 5: Solve for x
   x = 4,904,938.21/3,665.43
6. Step 6: Final answer
   x = 1,338.16