Finding the Fourth Proportional to 2,065.28, 3,095.16 and 1,140.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,065.28 : 3,095.16 = 1,140.80 : x
2. Step 2: Convert to fraction form
   2,065.28/3,095.16 = 1,140.80/x
3. Step 3: Cross multiply
   2,065.28x = 3,095.16 × 1,140.80
4. Step 4: Simplify right side
   2,065.28x = 3,530,958.53
5. Step 5: Solve for x
   x = 3,530,958.53/2,065.28
6. Step 6: Final answer
   x = 1,709.68