Finding the Fourth Proportional to 2,930.61, 4,391.82 and 2,105.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,930.61 : 4,391.82 = 2,105.02 : x
2. Step 2: Convert to fraction form
   2,930.61/4,391.82 = 2,105.02/x
3. Step 3: Cross multiply
   2,930.61x = 4,391.82 × 2,105.02
4. Step 4: Simplify right side
   2,930.61x = 9,244,858.41
5. Step 5: Solve for x
   x = 9,244,858.41/2,930.61
6. Step 6: Final answer
   x = 3,154.58