Finding the Fourth Proportional to 1,114.12, 1,537.55 and 672.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,114.12 : 1,537.55 = 672.09 : x
2. Step 2: Convert to fraction form
   1,114.12/1,537.55 = 672.09/x
3. Step 3: Cross multiply
   1,114.12x = 1,537.55 × 672.09
4. Step 4: Simplify right side
   1,114.12x = 1,033,371.98
5. Step 5: Solve for x
   x = 1,033,371.98/1,114.12
6. Step 6: Final answer
   x = 927.52