Finding the Fourth Proportional to 2,940.91, 4,411.56 and 1,091.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,940.91 : 4,411.56 = 1,091.98 : x
2. Step 2: Convert to fraction form
   2,940.91/4,411.56 = 1,091.98/x
3. Step 3: Cross multiply
   2,940.91x = 4,411.56 × 1,091.98
4. Step 4: Simplify right side
   2,940.91x = 4,817,335.29
5. Step 5: Solve for x
   x = 4,817,335.29/2,940.91
6. Step 6: Final answer
   x = 1,638.04