Finding the Fourth Proportional to 2,153.72, 3,227.70 and 983.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,153.72 : 3,227.70 = 983.84 : x
2. Step 2: Convert to fraction form
   2,153.72/3,227.70 = 983.84/x
3. Step 3: Cross multiply
   2,153.72x = 3,227.70 × 983.84
4. Step 4: Simplify right side
   2,153.72x = 3,175,540.37
5. Step 5: Solve for x
   x = 3,175,540.37/2,153.72
6. Step 6: Final answer
   x = 1,474.44