Finding the Fourth Proportional to 1,662.36, 2,293.11 and 998.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,662.36 : 2,293.11 = 998.83 : x
2. Step 2: Convert to fraction form
   1,662.36/2,293.11 = 998.83/x
3. Step 3: Cross multiply
   1,662.36x = 2,293.11 × 998.83
4. Step 4: Simplify right side
   1,662.36x = 2,290,429.93
5. Step 5: Solve for x
   x = 2,290,429.93/1,662.36
6. Step 6: Final answer
   x = 1,377.82