Finding the Fourth Proportional to 2,046.81, 3,069.57 and 660.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,046.81 : 3,069.57 = 660.09 : x
2. Step 2: Convert to fraction form
   2,046.81/3,069.57 = 660.09/x
3. Step 3: Cross multiply
   2,046.81x = 3,069.57 × 660.09
4. Step 4: Simplify right side
   2,046.81x = 2,026,192.46
5. Step 5: Solve for x
   x = 2,026,192.46/2,046.81
6. Step 6: Final answer
   x = 989.93