Finding the Fourth Proportional to 2,892.21, 3,997.81 and 2,662.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,892.21 : 3,997.81 = 2,662.57 : x
2. Step 2: Convert to fraction form
   2,892.21/3,997.81 = 2,662.57/x
3. Step 3: Cross multiply
   2,892.21x = 3,997.81 × 2,662.57
4. Step 4: Simplify right side
   2,892.21x = 10,644,442.32
5. Step 5: Solve for x
   x = 10,644,442.32/2,892.21
6. Step 6: Final answer
   x = 3,680.39