Finding the Fourth Proportional to 2,965.69, 4,447.02 and 990.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,965.69 : 4,447.02 = 990.62 : x
2. Step 2: Convert to fraction form
   2,965.69/4,447.02 = 990.62/x
3. Step 3: Cross multiply
   2,965.69x = 4,447.02 × 990.62
4. Step 4: Simplify right side
   2,965.69x = 4,405,284.72
5. Step 5: Solve for x
   x = 4,405,284.72/2,965.69
6. Step 6: Final answer
   x = 1,485.42