Finding the Fourth Proportional to 1,394.39, 1,922.81 and 896.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,394.39 : 1,922.81 = 896.63 : x
2. Step 2: Convert to fraction form
   1,394.39/1,922.81 = 896.63/x
3. Step 3: Cross multiply
   1,394.39x = 1,922.81 × 896.63
4. Step 4: Simplify right side
   1,394.39x = 1,724,035.03
5. Step 5: Solve for x
   x = 1,724,035.03/1,394.39
6. Step 6: Final answer
   x = 1,236.41