Finding the Fourth Proportional to 1,066.48, 1,597.88 and 517.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,066.48 : 1,597.88 = 517.98 : x
2. Step 2: Convert to fraction form
   1,066.48/1,597.88 = 517.98/x
3. Step 3: Cross multiply
   1,066.48x = 1,597.88 × 517.98
4. Step 4: Simplify right side
   1,066.48x = 827,669.88
5. Step 5: Solve for x
   x = 827,669.88/1,066.48
6. Step 6: Final answer
   x = 776.08