Finding the Fourth Proportional to 2,548.21, 3,517.28 and 1,664.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,548.21 : 3,517.28 = 1,664.15 : x
2. Step 2: Convert to fraction form
   2,548.21/3,517.28 = 1,664.15/x
3. Step 3: Cross multiply
   2,548.21x = 3,517.28 × 1,664.15
4. Step 4: Simplify right side
   2,548.21x = 5,853,281.51
5. Step 5: Solve for x
   x = 5,853,281.51/2,548.21
6. Step 6: Final answer
   x = 2,297.02