Finding the Fourth Proportional to 1,168.96, 1,754.58 and 520.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,168.96 : 1,754.58 = 520.12 : x
2. Step 2: Convert to fraction form
   1,168.96/1,754.58 = 520.12/x
3. Step 3: Cross multiply
   1,168.96x = 1,754.58 × 520.12
4. Step 4: Simplify right side
   1,168.96x = 912,592.15
5. Step 5: Solve for x
   x = 912,592.15/1,168.96
6. Step 6: Final answer
   x = 780.69