Finding the Fourth Proportional to 2,429.98, 3,645.28 and 786.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,429.98 : 3,645.28 = 786.50 : x
2. Step 2: Convert to fraction form
   2,429.98/3,645.28 = 786.50/x
3. Step 3: Cross multiply
   2,429.98x = 3,645.28 × 786.50
4. Step 4: Simplify right side
   2,429.98x = 2,867,012.72
5. Step 5: Solve for x
   x = 2,867,012.72/2,429.98
6. Step 6: Final answer
   x = 1,179.85