Finding the Fourth Proportional to 1,231.61, 1,699.27 and 759.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,231.61 : 1,699.27 = 759.59 : x
2. Step 2: Convert to fraction form
   1,231.61/1,699.27 = 759.59/x
3. Step 3: Cross multiply
   1,231.61x = 1,699.27 × 759.59
4. Step 4: Simplify right side
   1,231.61x = 1,290,738.10
5. Step 5: Solve for x
   x = 1,290,738.10/1,231.61
6. Step 6: Final answer
   x = 1,048.01