Finding the Fourth Proportional to 1,168.88, 1,753.31 and 519.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,168.88 : 1,753.31 = 519.59 : x
2. Step 2: Convert to fraction form
   1,168.88/1,753.31 = 519.59/x
3. Step 3: Cross multiply
   1,168.88x = 1,753.31 × 519.59
4. Step 4: Simplify right side
   1,168.88x = 911,008.03
5. Step 5: Solve for x
   x = 911,008.03/1,168.88
6. Step 6: Final answer
   x = 779.39