Finding the Fourth Proportional to 2,452.71, 3,678.74 and 786.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,452.71 : 3,678.74 = 786.69 : x
2. Step 2: Convert to fraction form
   2,452.71/3,678.74 = 786.69/x
3. Step 3: Cross multiply
   2,452.71x = 3,678.74 × 786.69
4. Step 4: Simplify right side
   2,452.71x = 2,894,029.94
5. Step 5: Solve for x
   x = 2,894,029.94/2,452.71
6. Step 6: Final answer
   x = 1,179.93