Finding the Fourth Proportional to 2,392.02, 3,587.22 and 1,092.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,392.02 : 3,587.22 = 1,092.78 : x
2. Step 2: Convert to fraction form
   2,392.02/3,587.22 = 1,092.78/x
3. Step 3: Cross multiply
   2,392.02x = 3,587.22 × 1,092.78
4. Step 4: Simplify right side
   2,392.02x = 3,920,042.27
5. Step 5: Solve for x
   x = 3,920,042.27/2,392.02
6. Step 6: Final answer
   x = 1,638.80