Finding the Fourth Proportional to 2,104.42, 3,157.78 and 1,008.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,104.42 : 3,157.78 = 1,008.64 : x
2. Step 2: Convert to fraction form
   2,104.42/3,157.78 = 1,008.64/x
3. Step 3: Cross multiply
   2,104.42x = 3,157.78 × 1,008.64
4. Step 4: Simplify right side
   2,104.42x = 3,185,063.22
5. Step 5: Solve for x
   x = 3,185,063.22/2,104.42
6. Step 6: Final answer
   x = 1,513.51