Finding the Fourth Proportional to 1,382.54, 1,908.56 and 885.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,382.54 : 1,908.56 = 885.92 : x
2. Step 2: Convert to fraction form
   1,382.54/1,908.56 = 885.92/x
3. Step 3: Cross multiply
   1,382.54x = 1,908.56 × 885.92
4. Step 4: Simplify right side
   1,382.54x = 1,690,824.15
5. Step 5: Solve for x
   x = 1,690,824.15/1,382.54
6. Step 6: Final answer
   x = 1,222.99