Finding the Fourth Proportional to 2,422.72, 3,634.04 and 779.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,422.72 : 3,634.04 = 779.24 : x
2. Step 2: Convert to fraction form
   2,422.72/3,634.04 = 779.24/x
3. Step 3: Cross multiply
   2,422.72x = 3,634.04 × 779.24
4. Step 4: Simplify right side
   2,422.72x = 2,831,789.33
5. Step 5: Solve for x
   x = 2,831,789.33/2,422.72
6. Step 6: Final answer
   x = 1,168.85