Finding the Fourth Proportional to 2,099.27, 2,896.82 and 1,215.13

Step by Step Solution

1. Step 1: Write the proportion equation
   2,099.27 : 2,896.82 = 1,215.13 : x
2. Step 2: Convert to fraction form
   2,099.27/2,896.82 = 1,215.13/x
3. Step 3: Cross multiply
   2,099.27x = 2,896.82 × 1,215.13
4. Step 4: Simplify right side
   2,099.27x = 3,520,012.89
5. Step 5: Solve for x
   x = 3,520,012.89/2,099.27
6. Step 6: Final answer
   x = 1,676.78