Finding the Fourth Proportional to 777.89, 1,068.42 and 729.69

Step by Step Solution

1. Step 1: Write the proportion equation
   777.89 : 1,068.42 = 729.69 : x
2. Step 2: Convert to fraction form
   777.89/1,068.42 = 729.69/x
3. Step 3: Cross multiply
   777.89x = 1,068.42 × 729.69
4. Step 4: Simplify right side
   777.89x = 779,615.39
5. Step 5: Solve for x
   x = 779,615.39/777.89
6. Step 6: Final answer
   x = 1,002.22