Finding the Fourth Proportional to 2,429.67, 3,645.27 and 869.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,429.67 : 3,645.27 = 869.64 : x
2. Step 2: Convert to fraction form
   2,429.67/3,645.27 = 869.64/x
3. Step 3: Cross multiply
   2,429.67x = 3,645.27 × 869.64
4. Step 4: Simplify right side
   2,429.67x = 3,170,072.60
5. Step 5: Solve for x
   x = 3,170,072.60/2,429.67
6. Step 6: Final answer
   x = 1,304.73