Finding the Fourth Proportional to 1,920.27, 2,650.11 and 1,134.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,920.27 : 2,650.11 = 1,134.78 : x
2. Step 2: Convert to fraction form
   1,920.27/2,650.11 = 1,134.78/x
3. Step 3: Cross multiply
   1,920.27x = 2,650.11 × 1,134.78
4. Step 4: Simplify right side
   1,920.27x = 3,007,291.83
5. Step 5: Solve for x
   x = 3,007,291.83/1,920.27
6. Step 6: Final answer
   x = 1,566.08