Finding the Fourth Proportional to 2,192.84, 3,286.56 and 893.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,192.84 : 3,286.56 = 893.60 : x
2. Step 2: Convert to fraction form
   2,192.84/3,286.56 = 893.60/x
3. Step 3: Cross multiply
   2,192.84x = 3,286.56 × 893.60
4. Step 4: Simplify right side
   2,192.84x = 2,936,870.02
5. Step 5: Solve for x
   x = 2,936,870.02/2,192.84
6. Step 6: Final answer
   x = 1,339.30