Finding the Fourth Proportional to 3,079.98, 4,618.89 and 999.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,079.98 : 4,618.89 = 999.42 : x
2. Step 2: Convert to fraction form
   3,079.98/4,618.89 = 999.42/x
3. Step 3: Cross multiply
   3,079.98x = 4,618.89 × 999.42
4. Step 4: Simplify right side
   3,079.98x = 4,616,211.04
5. Step 5: Solve for x
   x = 4,616,211.04/3,079.98
6. Step 6: Final answer
   x = 1,498.78