Finding the Fourth Proportional to 2,512.61, 3,467.39 and 1,393.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,512.61 : 3,467.39 = 1,393.55 : x
2. Step 2: Convert to fraction form
   2,512.61/3,467.39 = 1,393.55/x
3. Step 3: Cross multiply
   2,512.61x = 3,467.39 × 1,393.55
4. Step 4: Simplify right side
   2,512.61x = 4,831,989.54
5. Step 5: Solve for x
   x = 4,831,989.54/2,512.61
6. Step 6: Final answer
   x = 1,923.09