Finding the Fourth Proportional to 2,141.55, 3,212.01 and 908.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,141.55 : 3,212.01 = 908.73 : x
2. Step 2: Convert to fraction form
   2,141.55/3,212.01 = 908.73/x
3. Step 3: Cross multiply
   2,141.55x = 3,212.01 × 908.73
4. Step 4: Simplify right side
   2,141.55x = 2,918,849.85
5. Step 5: Solve for x
   x = 2,918,849.85/2,141.55
6. Step 6: Final answer
   x = 1,362.96