Finding the Fourth Proportional to 2,945.69, 4,060.85 and 2,106.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,945.69 : 4,060.85 = 2,106.09 : x
2. Step 2: Convert to fraction form
   2,945.69/4,060.85 = 2,106.09/x
3. Step 3: Cross multiply
   2,945.69x = 4,060.85 × 2,106.09
4. Step 4: Simplify right side
   2,945.69x = 8,552,520.84
5. Step 5: Solve for x
   x = 8,552,520.84/2,945.69
6. Step 6: Final answer
   x = 2,903.40