Finding the Fourth Proportional to 3,338.81, 5,008.17 and 998.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,338.81 : 5,008.17 = 998.83 : x
2. Step 2: Convert to fraction form
   3,338.81/5,008.17 = 998.83/x
3. Step 3: Cross multiply
   3,338.81x = 5,008.17 × 998.83
4. Step 4: Simplify right side
   3,338.81x = 5,002,312.02
5. Step 5: Solve for x
   x = 5,002,312.02/3,338.81
6. Step 6: Final answer
   x = 1,498.23