Finding the Fourth Proportional to 2,921.27, 4,380.89 and 2,097.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,921.27 : 4,380.89 = 2,097.09 : x
2. Step 2: Convert to fraction form
   2,921.27/4,380.89 = 2,097.09/x
3. Step 3: Cross multiply
   2,921.27x = 4,380.89 × 2,097.09
4. Step 4: Simplify right side
   2,921.27x = 9,187,110.12
5. Step 5: Solve for x
   x = 9,187,110.12/2,921.27
6. Step 6: Final answer
   x = 3,144.91