Finding the Fourth Proportional to 922.32, 1,381.59 and 854.82

Step by Step Solution

1. Step 1: Write the proportion equation
   922.32 : 1,381.59 = 854.82 : x
2. Step 2: Convert to fraction form
   922.32/1,381.59 = 854.82/x
3. Step 3: Cross multiply
   922.32x = 1,381.59 × 854.82
4. Step 4: Simplify right side
   922.32x = 1,181,010.76
5. Step 5: Solve for x
   x = 1,181,010.76/922.32
6. Step 6: Final answer
   x = 1,280.48