Finding the Fourth Proportional to 1,488.12, 2,231.37 and 758.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,488.12 : 2,231.37 = 758.04 : x
2. Step 2: Convert to fraction form
   1,488.12/2,231.37 = 758.04/x
3. Step 3: Cross multiply
   1,488.12x = 2,231.37 × 758.04
4. Step 4: Simplify right side
   1,488.12x = 1,691,467.71
5. Step 5: Solve for x
   x = 1,691,467.71/1,488.12
6. Step 6: Final answer
   x = 1,136.65