Finding the Fourth Proportional to 2,979.99, 4,468.54 and 899.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,979.99 : 4,468.54 = 899.61 : x
2. Step 2: Convert to fraction form
   2,979.99/4,468.54 = 899.61/x
3. Step 3: Cross multiply
   2,979.99x = 4,468.54 × 899.61
4. Step 4: Simplify right side
   2,979.99x = 4,019,943.27
5. Step 5: Solve for x
   x = 4,019,943.27/2,979.99
6. Step 6: Final answer
   x = 1,348.98