Finding the Fourth Proportional to 1,336.50, 1,843.56 and 863.64

Step by Step Solution

1. Step 1: Write the proportion equation
   1,336.50 : 1,843.56 = 863.64 : x
2. Step 2: Convert to fraction form
   1,336.50/1,843.56 = 863.64/x
3. Step 3: Cross multiply
   1,336.50x = 1,843.56 × 863.64
4. Step 4: Simplify right side
   1,336.50x = 1,592,172.16
5. Step 5: Solve for x
   x = 1,592,172.16/1,336.50
6. Step 6: Final answer
   x = 1,191.30