Finding the Fourth Proportional to 2,065.78, 2,850.78 and 1,134.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,065.78 : 2,850.78 = 1,134.28 : x
2. Step 2: Convert to fraction form
   2,065.78/2,850.78 = 1,134.28/x
3. Step 3: Cross multiply
   2,065.78x = 2,850.78 × 1,134.28
4. Step 4: Simplify right side
   2,065.78x = 3,233,582.74
5. Step 5: Solve for x
   x = 3,233,582.74/2,065.78
6. Step 6: Final answer
   x = 1,565.31