Finding the Fourth Proportional to 2,282.69, 3,150.24 and 1,287.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,282.69 : 3,150.24 = 1,287.78 : x
2. Step 2: Convert to fraction form
   2,282.69/3,150.24 = 1,287.78/x
3. Step 3: Cross multiply
   2,282.69x = 3,150.24 × 1,287.78
4. Step 4: Simplify right side
   2,282.69x = 4,056,816.07
5. Step 5: Solve for x
   x = 4,056,816.07/2,282.69
6. Step 6: Final answer
   x = 1,777.21