Finding the Fourth Proportional to 2,283.65, 3,151.41 and 1,288.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,283.65 : 3,151.41 = 1,288.93 : x
2. Step 2: Convert to fraction form
   2,283.65/3,151.41 = 1,288.93/x
3. Step 3: Cross multiply
   2,283.65x = 3,151.41 × 1,288.93
4. Step 4: Simplify right side
   2,283.65x = 4,061,946.89
5. Step 5: Solve for x
   x = 4,061,946.89/2,283.65
6. Step 6: Final answer
   x = 1,778.71