Finding the Fourth Proportional to 1,488.96, 2,233.68 and 758.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,488.96 : 2,233.68 = 758.15 : x
2. Step 2: Convert to fraction form
   1,488.96/2,233.68 = 758.15/x
3. Step 3: Cross multiply
   1,488.96x = 2,233.68 × 758.15
4. Step 4: Simplify right side
   1,488.96x = 1,693,453.32
5. Step 5: Solve for x
   x = 1,693,453.32/1,488.96
6. Step 6: Final answer
   x = 1,137.34