Finding the Fourth Proportional to 2,974.64, 4,458.83 and 998.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,974.64 : 4,458.83 = 998.40 : x
2. Step 2: Convert to fraction form
   2,974.64/4,458.83 = 998.40/x
3. Step 3: Cross multiply
   2,974.64x = 4,458.83 × 998.40
4. Step 4: Simplify right side
   2,974.64x = 4,451,682.52
5. Step 5: Solve for x
   x = 4,451,682.52/2,974.64
6. Step 6: Final answer
   x = 1,496.54