Finding the Fourth Proportional to 1,065.39, 1,598.82 and 517.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,065.39 : 1,598.82 = 517.96 : x
2. Step 2: Convert to fraction form
   1,065.39/1,598.82 = 517.96/x
3. Step 3: Cross multiply
   1,065.39x = 1,598.82 × 517.96
4. Step 4: Simplify right side
   1,065.39x = 828,123.36
5. Step 5: Solve for x
   x = 828,123.36/1,065.39
6. Step 6: Final answer
   x = 777.29