Finding the Fourth Proportional to 2,160.98, 2,982.17 and 1,229.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,160.98 : 2,982.17 = 1,229.54 : x
2. Step 2: Convert to fraction form
   2,160.98/2,982.17 = 1,229.54/x
3. Step 3: Cross multiply
   2,160.98x = 2,982.17 × 1,229.54
4. Step 4: Simplify right side
   2,160.98x = 3,666,697.30
5. Step 5: Solve for x
   x = 3,666,697.30/2,160.98
6. Step 6: Final answer
   x = 1,696.78