Finding the Fourth Proportional to 1,836.72, 2,756.16 and 863.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,836.72 : 2,756.16 = 863.52 : x
2. Step 2: Convert to fraction form
   1,836.72/2,756.16 = 863.52/x
3. Step 3: Cross multiply
   1,836.72x = 2,756.16 × 863.52
4. Step 4: Simplify right side
   1,836.72x = 2,379,999.28
5. Step 5: Solve for x
   x = 2,379,999.28/1,836.72
6. Step 6: Final answer
   x = 1,295.79