Finding the Fourth Proportional to 2,633.73, 3,951.71 and 990.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,633.73 : 3,951.71 = 990.06 : x
2. Step 2: Convert to fraction form
   2,633.73/3,951.71 = 990.06/x
3. Step 3: Cross multiply
   2,633.73x = 3,951.71 × 990.06
4. Step 4: Simplify right side
   2,633.73x = 3,912,425.05
5. Step 5: Solve for x
   x = 3,912,425.05/2,633.73
6. Step 6: Final answer
   x = 1,485.51