Finding the Fourth Proportional to 2,423.98, 3,636.63 and 864.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,423.98 : 3,636.63 = 864.15 : x
2. Step 2: Convert to fraction form
   2,423.98/3,636.63 = 864.15/x
3. Step 3: Cross multiply
   2,423.98x = 3,636.63 × 864.15
4. Step 4: Simplify right side
   2,423.98x = 3,142,591.14
5. Step 5: Solve for x
   x = 3,142,591.14/2,423.98
6. Step 6: Final answer
   x = 1,296.46