Finding the Fourth Proportional to 1,362.89, 1,880.87 and 773.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,362.89 : 1,880.87 = 773.39 : x
2. Step 2: Convert to fraction form
   1,362.89/1,880.87 = 773.39/x
3. Step 3: Cross multiply
   1,362.89x = 1,880.87 × 773.39
4. Step 4: Simplify right side
   1,362.89x = 1,454,646.05
5. Step 5: Solve for x
   x = 1,454,646.05/1,362.89
6. Step 6: Final answer
   x = 1,067.32