Finding the Fourth Proportional to 2,558.82, 3,837.39 and 998.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,558.82 : 3,837.39 = 998.43 : x
2. Step 2: Convert to fraction form
   2,558.82/3,837.39 = 998.43/x
3. Step 3: Cross multiply
   2,558.82x = 3,837.39 × 998.43
4. Step 4: Simplify right side
   2,558.82x = 3,831,365.30
5. Step 5: Solve for x
   x = 3,831,365.30/2,558.82
6. Step 6: Final answer
   x = 1,497.32