Finding the Fourth Proportional to 2,865.65, 4,295.46 and 1,200.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,865.65 : 4,295.46 = 1,200.72 : x
2. Step 2: Convert to fraction form
   2,865.65/4,295.46 = 1,200.72/x
3. Step 3: Cross multiply
   2,865.65x = 4,295.46 × 1,200.72
4. Step 4: Simplify right side
   2,865.65x = 5,157,644.73
5. Step 5: Solve for x
   x = 5,157,644.73/2,865.65
6. Step 6: Final answer
   x = 1,799.82