Finding the Fourth Proportional to 2,624.69, 3,937.22 and 869.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,624.69 : 3,937.22 = 869.63 : x
2. Step 2: Convert to fraction form
   2,624.69/3,937.22 = 869.63/x
3. Step 3: Cross multiply
   2,624.69x = 3,937.22 × 869.63
4. Step 4: Simplify right side
   2,624.69x = 3,423,900.59
5. Step 5: Solve for x
   x = 3,423,900.59/2,624.69
6. Step 6: Final answer
   x = 1,304.50