Finding the Fourth Proportional to 1,227.84, 1,692.72 and 896.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,227.84 : 1,692.72 = 896.28 : x
2. Step 2: Convert to fraction form
   1,227.84/1,692.72 = 896.28/x
3. Step 3: Cross multiply
   1,227.84x = 1,692.72 × 896.28
4. Step 4: Simplify right side
   1,227.84x = 1,517,151.08
5. Step 5: Solve for x
   x = 1,517,151.08/1,227.84
6. Step 6: Final answer
   x = 1,235.63