Finding the Fourth Proportional to 1,992.69, 2,749.41 and 1,206.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,992.69 : 2,749.41 = 1,206.59 : x
2. Step 2: Convert to fraction form
   1,992.69/2,749.41 = 1,206.59/x
3. Step 3: Cross multiply
   1,992.69x = 2,749.41 × 1,206.59
4. Step 4: Simplify right side
   1,992.69x = 3,317,396.86
5. Step 5: Solve for x
   x = 3,317,396.86/1,992.69
6. Step 6: Final answer
   x = 1,664.78