Finding the Fourth Proportional to 1,998.91, 2,758.50 and 1,114.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,998.91 : 2,758.50 = 1,114.69 : x
2. Step 2: Convert to fraction form
   1,998.91/2,758.50 = 1,114.69/x
3. Step 3: Cross multiply
   1,998.91x = 2,758.50 × 1,114.69
4. Step 4: Simplify right side
   1,998.91x = 3,074,872.37
5. Step 5: Solve for x
   x = 3,074,872.37/1,998.91
6. Step 6: Final answer
   x = 1,538.27