Finding the Fourth Proportional to 1,998.62, 2,758.17 and 1,114.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,998.62 : 2,758.17 = 1,114.40 : x
2. Step 2: Convert to fraction form
   1,998.62/2,758.17 = 1,114.40/x
3. Step 3: Cross multiply
   1,998.62x = 2,758.17 × 1,114.40
4. Step 4: Simplify right side
   1,998.62x = 3,073,690.86
5. Step 5: Solve for x
   x = 3,073,690.86/1,998.62
6. Step 6: Final answer
   x = 1,537.91