Finding the Fourth Proportional to 2,094.40, 3,142.68 and 998.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,094.40 : 3,142.68 = 998.56 : x
2. Step 2: Convert to fraction form
   2,094.40/3,142.68 = 998.56/x
3. Step 3: Cross multiply
   2,094.40x = 3,142.68 × 998.56
4. Step 4: Simplify right side
   2,094.40x = 3,138,154.54
5. Step 5: Solve for x
   x = 3,138,154.54/2,094.40
6. Step 6: Final answer
   x = 1,498.35