Finding the Fourth Proportional to 1,356.84, 1,872.18 and 767.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,356.84 : 1,872.18 = 767.16 : x
2. Step 2: Convert to fraction form
   1,356.84/1,872.18 = 767.16/x
3. Step 3: Cross multiply
   1,356.84x = 1,872.18 × 767.16
4. Step 4: Simplify right side
   1,356.84x = 1,436,261.61
5. Step 5: Solve for x
   x = 1,436,261.61/1,356.84
6. Step 6: Final answer
   x = 1,058.53