Finding the Fourth Proportional to 2,098.89, 2,896.64 and 1,215.00

Step by Step Solution

1. Step 1: Write the proportion equation
   2,098.89 : 2,896.64 = 1,215.00 : x
2. Step 2: Convert to fraction form
   2,098.89/2,896.64 = 1,215.00/x
3. Step 3: Cross multiply
   2,098.89x = 2,896.64 × 1,215.00
4. Step 4: Simplify right side
   2,098.89x = 3,519,397.04
5. Step 5: Solve for x
   x = 3,519,397.04/2,098.89
6. Step 6: Final answer
   x = 1,676.79