Finding the Fourth Proportional to 1,488.69, 2,234.25 and 758.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,488.69 : 2,234.25 = 758.48 : x
2. Step 2: Convert to fraction form
   1,488.69/2,234.25 = 758.48/x
3. Step 3: Cross multiply
   1,488.69x = 2,234.25 × 758.48
4. Step 4: Simplify right side
   1,488.69x = 1,694,622.77
5. Step 5: Solve for x
   x = 1,694,622.77/1,488.69
6. Step 6: Final answer
   x = 1,138.33