Finding the Fourth Proportional to 1,231.77, 1,699.71 and 759.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,231.77 : 1,699.71 = 759.59 : x
2. Step 2: Convert to fraction form
   1,231.77/1,699.71 = 759.59/x
3. Step 3: Cross multiply
   1,231.77x = 1,699.71 × 759.59
4. Step 4: Simplify right side
   1,231.77x = 1,291,082.72
5. Step 5: Solve for x
   x = 1,291,082.72/1,231.77
6. Step 6: Final answer
   x = 1,048.15