Finding the Fourth Proportional to 2,429.69, 3,645.24 and 786.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,429.69 : 3,645.24 = 786.20 : x
2. Step 2: Convert to fraction form
   2,429.69/3,645.24 = 786.20/x
3. Step 3: Cross multiply
   2,429.69x = 3,645.24 × 786.20
4. Step 4: Simplify right side
   2,429.69x = 2,865,887.69
5. Step 5: Solve for x
   x = 2,865,887.69/2,429.69
6. Step 6: Final answer
   x = 1,179.53