Finding the Fourth Proportional to 2,141.30, 3,211.68 and 908.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,141.30 : 3,211.68 = 908.10 : x
2. Step 2: Convert to fraction form
   2,141.30/3,211.68 = 908.10/x
3. Step 3: Cross multiply
   2,141.30x = 3,211.68 × 908.10
4. Step 4: Simplify right side
   2,141.30x = 2,916,526.61
5. Step 5: Solve for x
   x = 2,916,526.61/2,141.30
6. Step 6: Final answer
   x = 1,362.04