Finding the Fourth Proportional to 1,992.38, 2,749.56 and 1,108.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,992.38 : 2,749.56 = 1,108.40 : x
2. Step 2: Convert to fraction form
   1,992.38/2,749.56 = 1,108.40/x
3. Step 3: Cross multiply
   1,992.38x = 2,749.56 × 1,108.40
4. Step 4: Simplify right side
   1,992.38x = 3,047,612.30
5. Step 5: Solve for x
   x = 3,047,612.30/1,992.38
6. Step 6: Final answer
   x = 1,529.63