Finding the Fourth Proportional to 3,085.89, 4,628.82 and 777.39

Step by Step Solution

1. Step 1: Write the proportion equation
   3,085.89 : 4,628.82 = 777.39 : x
2. Step 2: Convert to fraction form
   3,085.89/4,628.82 = 777.39/x
3. Step 3: Cross multiply
   3,085.89x = 4,628.82 × 777.39
4. Step 4: Simplify right side
   3,085.89x = 3,598,398.38
5. Step 5: Solve for x
   x = 3,598,398.38/3,085.89
6. Step 6: Final answer
   x = 1,166.08