Finding the Fourth Proportional to 2,000.78, 2,760.81 and 1,116.44

Step by Step Solution

1. Step 1: Write the proportion equation
   2,000.78 : 2,760.81 = 1,116.44 : x
2. Step 2: Convert to fraction form
   2,000.78/2,760.81 = 1,116.44/x
3. Step 3: Cross multiply
   2,000.78x = 2,760.81 × 1,116.44
4. Step 4: Simplify right side
   2,000.78x = 3,082,278.72
5. Step 5: Solve for x
   x = 3,082,278.72/2,000.78
6. Step 6: Final answer
   x = 1,540.54