Finding the Fourth Proportional to 2,283.52, 3,151.04 and 1,288.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,283.52 : 3,151.04 = 1,288.80 : x
2. Step 2: Convert to fraction form
   2,283.52/3,151.04 = 1,288.80/x
3. Step 3: Cross multiply
   2,283.52x = 3,151.04 × 1,288.80
4. Step 4: Simplify right side
   2,283.52x = 4,061,060.35
5. Step 5: Solve for x
   x = 4,061,060.35/2,283.52
6. Step 6: Final answer
   x = 1,778.42