Finding the Fourth Proportional to 2,295.78, 3,168.15 and 1,247.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,295.78 : 3,168.15 = 1,247.82 : x
2. Step 2: Convert to fraction form
   2,295.78/3,168.15 = 1,247.82/x
3. Step 3: Cross multiply
   2,295.78x = 3,168.15 × 1,247.82
4. Step 4: Simplify right side
   2,295.78x = 3,953,280.93
5. Step 5: Solve for x
   x = 3,953,280.93/2,295.78
6. Step 6: Final answer
   x = 1,721.98