Finding the Fourth Proportional to 2,007.72, 3,017.25 and 1,186.11

Step by Step Solution

1. Step 1: Write the proportion equation
   2,007.72 : 3,017.25 = 1,186.11 : x
2. Step 2: Convert to fraction form
   2,007.72/3,017.25 = 1,186.11/x
3. Step 3: Cross multiply
   2,007.72x = 3,017.25 × 1,186.11
4. Step 4: Simplify right side
   2,007.72x = 3,578,790.40
5. Step 5: Solve for x
   x = 3,578,790.40/2,007.72
6. Step 6: Final answer
   x = 1,782.51