Finding the Fourth Proportional to 1,992.09, 2,748.69 and 1,206.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,992.09 : 2,748.69 = 1,206.18 : x
2. Step 2: Convert to fraction form
   1,992.09/2,748.69 = 1,206.18/x
3. Step 3: Cross multiply
   1,992.09x = 2,748.69 × 1,206.18
4. Step 4: Simplify right side
   1,992.09x = 3,315,414.90
5. Step 5: Solve for x
   x = 3,315,414.90/1,992.09
6. Step 6: Final answer
   x = 1,664.29