Finding the Fourth Proportional to 2,140.56, 3,211.83 and 908.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,140.56 : 3,211.83 = 908.27 : x
2. Step 2: Convert to fraction form
   2,140.56/3,211.83 = 908.27/x
3. Step 3: Cross multiply
   2,140.56x = 3,211.83 × 908.27
4. Step 4: Simplify right side
   2,140.56x = 2,917,192.77
5. Step 5: Solve for x
   x = 2,917,192.77/2,140.56
6. Step 6: Final answer
   x = 1,362.82