Finding the Fourth Proportional to 2,423.42, 3,634.31 and 779.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,423.42 : 3,634.31 = 779.57 : x
2. Step 2: Convert to fraction form
   2,423.42/3,634.31 = 779.57/x
3. Step 3: Cross multiply
   2,423.42x = 3,634.31 × 779.57
4. Step 4: Simplify right side
   2,423.42x = 2,833,191.91
5. Step 5: Solve for x
   x = 2,833,191.91/2,423.42
6. Step 6: Final answer
   x = 1,169.09