Finding the Fourth Proportional to 2,282.58, 3,149.89 and 1,288.00

Step by Step Solution

1. Step 1: Write the proportion equation
   2,282.58 : 3,149.89 = 1,288.00 : x
2. Step 2: Convert to fraction form
   2,282.58/3,149.89 = 1,288.00/x
3. Step 3: Cross multiply
   2,282.58x = 3,149.89 × 1,288.00
4. Step 4: Simplify right side
   2,282.58x = 4,057,059.04
5. Step 5: Solve for x
   x = 4,057,059.04/2,282.58
6. Step 6: Final answer
   x = 1,777.40