Finding the Fourth Proportional to 2,896.31, 3,998.63 and 2,196.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,896.31 : 3,998.63 = 2,196.47 : x
2. Step 2: Convert to fraction form
   2,896.31/3,998.63 = 2,196.47/x
3. Step 3: Cross multiply
   2,896.31x = 3,998.63 × 2,196.47
4. Step 4: Simplify right side
   2,896.31x = 8,782,886.32
5. Step 5: Solve for x
   x = 8,782,886.32/2,896.31
6. Step 6: Final answer
   x = 3,032.44