Finding the Fourth Proportional to 2,141.10, 3,211.38 and 908.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,141.10 : 3,211.38 = 908.28 : x
2. Step 2: Convert to fraction form
   2,141.10/3,211.38 = 908.28/x
3. Step 3: Cross multiply
   2,141.10x = 3,211.38 × 908.28
4. Step 4: Simplify right side
   2,141.10x = 2,916,832.23
5. Step 5: Solve for x
   x = 2,916,832.23/2,141.10
6. Step 6: Final answer
   x = 1,362.31