Finding the Fourth Proportional to 2,283.54, 3,151.27 and 1,288.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,283.54 : 3,151.27 = 1,288.81 : x
2. Step 2: Convert to fraction form
   2,283.54/3,151.27 = 1,288.81/x
3. Step 3: Cross multiply
   2,283.54x = 3,151.27 × 1,288.81
4. Step 4: Simplify right side
   2,283.54x = 4,061,393.84
5. Step 5: Solve for x
   x = 4,061,393.84/2,283.54
6. Step 6: Final answer
   x = 1,778.55