Finding the Fourth Proportional to 2,512.61, 3,467.55 and 1,393.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,512.61 : 3,467.55 = 1,393.89 : x
2. Step 2: Convert to fraction form
   2,512.61/3,467.55 = 1,393.89/x
3. Step 3: Cross multiply
   2,512.61x = 3,467.55 × 1,393.89
4. Step 4: Simplify right side
   2,512.61x = 4,833,383.27
5. Step 5: Solve for x
   x = 4,833,383.27/2,512.61
6. Step 6: Final answer
   x = 1,923.65