Finding the Fourth Proportional to 2,209.31, 3,049.04 and 1,214.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,209.31 : 3,049.04 = 1,214.78 : x
2. Step 2: Convert to fraction form
   2,209.31/3,049.04 = 1,214.78/x
3. Step 3: Cross multiply
   2,209.31x = 3,049.04 × 1,214.78
4. Step 4: Simplify right side
   2,209.31x = 3,703,900.60
5. Step 5: Solve for x
   x = 3,703,900.60/2,209.31
6. Step 6: Final answer
   x = 1,676.50