Finding the Fourth Proportional to 1,362.78, 1,880.46 and 773.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,362.78 : 1,880.46 = 773.37 : x
2. Step 2: Convert to fraction form
   1,362.78/1,880.46 = 773.37/x
3. Step 3: Cross multiply
   1,362.78x = 1,880.46 × 773.37
4. Step 4: Simplify right side
   1,362.78x = 1,454,291.35
5. Step 5: Solve for x
   x = 1,454,291.35/1,362.78
6. Step 6: Final answer
   x = 1,067.15