Finding the Fourth Proportional to 1,997.04, 2,757.40 and 1,212.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,997.04 : 2,757.40 = 1,212.15 : x
2. Step 2: Convert to fraction form
   1,997.04/2,757.40 = 1,212.15/x
3. Step 3: Cross multiply
   1,997.04x = 2,757.40 × 1,212.15
4. Step 4: Simplify right side
   1,997.04x = 3,342,382.41
5. Step 5: Solve for x
   x = 3,342,382.41/1,997.04
6. Step 6: Final answer
   x = 1,673.67