Finding the Fourth Proportional to 1,998.38, 2,993.91 and 1,116.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,998.38 : 2,993.91 = 1,116.29 : x
2. Step 2: Convert to fraction form
   1,998.38/2,993.91 = 1,116.29/x
3. Step 3: Cross multiply
   1,998.38x = 2,993.91 × 1,116.29
4. Step 4: Simplify right side
   1,998.38x = 3,342,056.82
5. Step 5: Solve for x
   x = 3,342,056.82/1,998.38
6. Step 6: Final answer
   x = 1,672.39