Finding the Fourth Proportional to 1,356.69, 1,872.33 and 767.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,356.69 : 1,872.33 = 767.23 : x
2. Step 2: Convert to fraction form
   1,356.69/1,872.33 = 767.23/x
3. Step 3: Cross multiply
   1,356.69x = 1,872.33 × 767.23
4. Step 4: Simplify right side
   1,356.69x = 1,436,494.55
5. Step 5: Solve for x
   x = 1,436,494.55/1,356.69
6. Step 6: Final answer
   x = 1,058.82