Finding the Fourth Proportional to 2,283.78, 3,151.56 and 1,275.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,283.78 : 3,151.56 = 1,275.45 : x
2. Step 2: Convert to fraction form
   2,283.78/3,151.56 = 1,275.45/x
3. Step 3: Cross multiply
   2,283.78x = 3,151.56 × 1,275.45
4. Step 4: Simplify right side
   2,283.78x = 4,019,657.20
5. Step 5: Solve for x
   x = 4,019,657.20/2,283.78
6. Step 6: Final answer
   x = 1,760.09