Finding the Fourth Proportional to 2,422.95, 3,634.56 and 779.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,422.95 : 3,634.56 = 779.55 : x
2. Step 2: Convert to fraction form
   2,422.95/3,634.56 = 779.55/x
3. Step 3: Cross multiply
   2,422.95x = 3,634.56 × 779.55
4. Step 4: Simplify right side
   2,422.95x = 2,833,321.25
5. Step 5: Solve for x
   x = 2,833,321.25/2,422.95
6. Step 6: Final answer
   x = 1,169.37