Finding the Fourth Proportional to 2,939.89, 4,411.55 and 1,092.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,939.89 : 4,411.55 = 1,092.28 : x
2. Step 2: Convert to fraction form
   2,939.89/4,411.55 = 1,092.28/x
3. Step 3: Cross multiply
   2,939.89x = 4,411.55 × 1,092.28
4. Step 4: Simplify right side
   2,939.89x = 4,818,642.37
5. Step 5: Solve for x
   x = 4,818,642.37/2,939.89
6. Step 6: Final answer
   x = 1,639.06