Finding the Fourth Proportional to 3,699.39, 5,104.71 and 2,105.46

Step by Step Solution

1. Step 1: Write the proportion equation
   3,699.39 : 5,104.71 = 2,105.46 : x
2. Step 2: Convert to fraction form
   3,699.39/5,104.71 = 2,105.46/x
3. Step 3: Cross multiply
   3,699.39x = 5,104.71 × 2,105.46
4. Step 4: Simplify right side
   3,699.39x = 10,747,762.72
5. Step 5: Solve for x
   x = 10,747,762.72/3,699.39
6. Step 6: Final answer
   x = 2,905.28