Finding the Fourth Proportional to 2,696.05, 3,722.61 and 2,105.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,696.05 : 3,722.61 = 2,105.56 : x
2. Step 2: Convert to fraction form
   2,696.05/3,722.61 = 2,105.56/x
3. Step 3: Cross multiply
   2,696.05x = 3,722.61 × 2,105.56
4. Step 4: Simplify right side
   2,696.05x = 7,838,178.71
5. Step 5: Solve for x
   x = 7,838,178.71/2,696.05
6. Step 6: Final answer
   x = 2,907.28