Finding the Fourth Proportional to 2,307.17, 3,186.89 and 1,866.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,307.17 : 3,186.89 = 1,866.73 : x
2. Step 2: Convert to fraction form
   2,307.17/3,186.89 = 1,866.73/x
3. Step 3: Cross multiply
   2,307.17x = 3,186.89 × 1,866.73
4. Step 4: Simplify right side
   2,307.17x = 5,949,059.87
5. Step 5: Solve for x
   x = 5,949,059.87/2,307.17
6. Step 6: Final answer
   x = 2,578.52