Finding the Fourth Proportional to 2,207.30, 3,045.98 and 1,212.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,207.30 : 3,045.98 = 1,212.56 : x
2. Step 2: Convert to fraction form
   2,207.30/3,045.98 = 1,212.56/x
3. Step 3: Cross multiply
   2,207.30x = 3,045.98 × 1,212.56
4. Step 4: Simplify right side
   2,207.30x = 3,693,425.04
5. Step 5: Solve for x
   x = 3,693,425.04/2,207.30
6. Step 6: Final answer
   x = 1,673.28