Finding the Fourth Proportional to 1,356.83, 1,872.32 and 767.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,356.83 : 1,872.32 = 767.25 : x
2. Step 2: Convert to fraction form
   1,356.83/1,872.32 = 767.25/x
3. Step 3: Cross multiply
   1,356.83x = 1,872.32 × 767.25
4. Step 4: Simplify right side
   1,356.83x = 1,436,533.68
5. Step 5: Solve for x
   x = 1,436,533.68/1,356.83
6. Step 6: Final answer
   x = 1,058.74