Finding the Fourth Proportional to 2,985.78, 4,478.17 and 794.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,985.78 : 4,478.17 = 794.33 : x
2. Step 2: Convert to fraction form
   2,985.78/4,478.17 = 794.33/x
3. Step 3: Cross multiply
   2,985.78x = 4,478.17 × 794.33
4. Step 4: Simplify right side
   2,985.78x = 3,557,144.78
5. Step 5: Solve for x
   x = 3,557,144.78/2,985.78
6. Step 6: Final answer
   x = 1,191.36