Finding the Fourth Proportional to 3,686.69, 5,088.71 and 2,945.81

Step by Step Solution

1. Step 1: Write the proportion equation
   3,686.69 : 5,088.71 = 2,945.81 : x
2. Step 2: Convert to fraction form
   3,686.69/5,088.71 = 2,945.81/x
3. Step 3: Cross multiply
   3,686.69x = 5,088.71 × 2,945.81
4. Step 4: Simplify right side
   3,686.69x = 14,990,372.81
5. Step 5: Solve for x
   x = 14,990,372.81/3,686.69
6. Step 6: Final answer
   x = 4,066.08