Finding the Fourth Proportional to 2,937.69, 4,406.53 and 989.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,937.69 : 4,406.53 = 989.89 : x
2. Step 2: Convert to fraction form
   2,937.69/4,406.53 = 989.89/x
3. Step 3: Cross multiply
   2,937.69x = 4,406.53 × 989.89
4. Step 4: Simplify right side
   2,937.69x = 4,361,979.98
5. Step 5: Solve for x
   x = 4,361,979.98/2,937.69
6. Step 6: Final answer
   x = 1,484.83