Finding the Fourth Proportional to 2,429.99, 3,645.51 and 786.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,429.99 : 3,645.51 = 786.70 : x
2. Step 2: Convert to fraction form
   2,429.99/3,645.51 = 786.70/x
3. Step 3: Cross multiply
   2,429.99x = 3,645.51 × 786.70
4. Step 4: Simplify right side
   2,429.99x = 2,867,922.72
5. Step 5: Solve for x
   x = 2,867,922.72/2,429.99
6. Step 6: Final answer
   x = 1,180.22