Finding the Fourth Proportional to 2,979.50, 4,469.83 and 899.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,979.50 : 4,469.83 = 899.67 : x
2. Step 2: Convert to fraction form
   2,979.50/4,469.83 = 899.67/x
3. Step 3: Cross multiply
   2,979.50x = 4,469.83 × 899.67
4. Step 4: Simplify right side
   2,979.50x = 4,021,367.46
5. Step 5: Solve for x
   x = 4,021,367.46/2,979.50
6. Step 6: Final answer
   x = 1,349.68