Finding the Fourth Proportional to 1,362.71, 1,880.53 and 773.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,362.71 : 1,880.53 = 773.28 : x
2. Step 2: Convert to fraction form
   1,362.71/1,880.53 = 773.28/x
3. Step 3: Cross multiply
   1,362.71x = 1,880.53 × 773.28
4. Step 4: Simplify right side
   1,362.71x = 1,454,174.31
5. Step 5: Solve for x
   x = 1,454,174.31/1,362.71
6. Step 6: Final answer
   x = 1,067.12