Finding the Fourth Proportional to 1,654.34, 2,282.57 and 990.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,654.34 : 2,282.57 = 990.73 : x
2. Step 2: Convert to fraction form
   1,654.34/2,282.57 = 990.73/x
3. Step 3: Cross multiply
   1,654.34x = 2,282.57 × 990.73
4. Step 4: Simplify right side
   1,654.34x = 2,261,399.92
5. Step 5: Solve for x
   x = 2,261,399.92/1,654.34
6. Step 6: Final answer
   x = 1,366.95