Finding the Fourth Proportional to 2,099.29, 3,146.62 and 866.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,099.29 : 3,146.62 = 866.37 : x
2. Step 2: Convert to fraction form
   2,099.29/3,146.62 = 866.37/x
3. Step 3: Cross multiply
   2,099.29x = 3,146.62 × 866.37
4. Step 4: Simplify right side
   2,099.29x = 2,726,142.01
5. Step 5: Solve for x
   x = 2,726,142.01/2,099.29
6. Step 6: Final answer
   x = 1,298.60