Finding the Fourth Proportional to 2,384.28, 3,578.49 and 998.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,384.28 : 3,578.49 = 998.55 : x
2. Step 2: Convert to fraction form
   2,384.28/3,578.49 = 998.55/x
3. Step 3: Cross multiply
   2,384.28x = 3,578.49 × 998.55
4. Step 4: Simplify right side
   2,384.28x = 3,573,301.19
5. Step 5: Solve for x
   x = 3,573,301.19/2,384.28
6. Step 6: Final answer
   x = 1,498.69