Finding the Fourth Proportional to 2,309.72, 3,186.72 and 1,365.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,309.72 : 3,186.72 = 1,365.59 : x
2. Step 2: Convert to fraction form
   2,309.72/3,186.72 = 1,365.59/x
3. Step 3: Cross multiply
   2,309.72x = 3,186.72 × 1,365.59
4. Step 4: Simplify right side
   2,309.72x = 4,351,760.93
5. Step 5: Solve for x
   x = 4,351,760.93/2,309.72
6. Step 6: Final answer
   x = 1,884.11