Finding the Fourth Proportional to 2,283.44, 3,151.46 and 1,288.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,283.44 : 3,151.46 = 1,288.76 : x
2. Step 2: Convert to fraction form
   2,283.44/3,151.46 = 1,288.76/x
3. Step 3: Cross multiply
   2,283.44x = 3,151.46 × 1,288.76
4. Step 4: Simplify right side
   2,283.44x = 4,061,475.59
5. Step 5: Solve for x
   x = 4,061,475.59/2,283.44
6. Step 6: Final answer
   x = 1,778.67