Finding the Fourth Proportional to 2,275.39, 3,142.50 and 1,777.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,275.39 : 3,142.50 = 1,777.28 : x
2. Step 2: Convert to fraction form
   2,275.39/3,142.50 = 1,777.28/x
3. Step 3: Cross multiply
   2,275.39x = 3,142.50 × 1,777.28
4. Step 4: Simplify right side
   2,275.39x = 5,585,104.53
5. Step 5: Solve for x
   x = 5,585,104.53/2,275.39
6. Step 6: Final answer
   x = 2,454.57