Finding the Fourth Proportional to 2,144.71, 3,217.08 and 1,048.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,144.71 : 3,217.08 = 1,048.78 : x
2. Step 2: Convert to fraction form
   2,144.71/3,217.08 = 1,048.78/x
3. Step 3: Cross multiply
   2,144.71x = 3,217.08 × 1,048.78
4. Step 4: Simplify right side
   2,144.71x = 3,374,017.12
5. Step 5: Solve for x
   x = 3,374,017.12/2,144.71
6. Step 6: Final answer
   x = 1,573.18