Finding the Fourth Proportional to 2,147.34, 3,220.53 and 1,092.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,147.34 : 3,220.53 = 1,092.09 : x
2. Step 2: Convert to fraction form
   2,147.34/3,220.53 = 1,092.09/x
3. Step 3: Cross multiply
   2,147.34x = 3,220.53 × 1,092.09
4. Step 4: Simplify right side
   2,147.34x = 3,517,108.61
5. Step 5: Solve for x
   x = 3,517,108.61/2,147.34
6. Step 6: Final answer
   x = 1,637.89