Finding the Fourth Proportional to 2,940.72, 4,411.19 and 1,092.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,940.72 : 4,411.19 = 1,092.30 : x
2. Step 2: Convert to fraction form
   2,940.72/4,411.19 = 1,092.30/x
3. Step 3: Cross multiply
   2,940.72x = 4,411.19 × 1,092.30
4. Step 4: Simplify right side
   2,940.72x = 4,818,342.84
5. Step 5: Solve for x
   x = 4,818,342.84/2,940.72
6. Step 6: Final answer
   x = 1,638.49