Finding the Fourth Proportional to 2,979.88, 4,469.59 and 899.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,979.88 : 4,469.59 = 899.83 : x
2. Step 2: Convert to fraction form
   2,979.88/4,469.59 = 899.83/x
3. Step 3: Cross multiply
   2,979.88x = 4,469.59 × 899.83
4. Step 4: Simplify right side
   2,979.88x = 4,021,871.17
5. Step 5: Solve for x
   x = 4,021,871.17/2,979.88
6. Step 6: Final answer
   x = 1,349.68