Finding the Fourth Proportional to 1,096.03, 1,643.23 and 518.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,096.03 : 1,643.23 = 518.77 : x
2. Step 2: Convert to fraction form
   1,096.03/1,643.23 = 518.77/x
3. Step 3: Cross multiply
   1,096.03x = 1,643.23 × 518.77
4. Step 4: Simplify right side
   1,096.03x = 852,458.43
5. Step 5: Solve for x
   x = 852,458.43/1,096.03
6. Step 6: Final answer
   x = 777.77