Finding the Fourth Proportional to 3,189.16, 4,784.55 and 998.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,189.16 : 4,784.55 = 998.38 : x
2. Step 2: Convert to fraction form
   3,189.16/4,784.55 = 998.38/x
3. Step 3: Cross multiply
   3,189.16x = 4,784.55 × 998.38
4. Step 4: Simplify right side
   3,189.16x = 4,776,799.03
5. Step 5: Solve for x
   x = 4,776,799.03/3,189.16
6. Step 6: Final answer
   x = 1,497.82