Finding the Fourth Proportional to 2,608.40, 3,913.88 and 1,048.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,608.40 : 3,913.88 = 1,048.34 : x
2. Step 2: Convert to fraction form
   2,608.40/3,913.88 = 1,048.34/x
3. Step 3: Cross multiply
   2,608.40x = 3,913.88 × 1,048.34
4. Step 4: Simplify right side
   2,608.40x = 4,103,052.15
5. Step 5: Solve for x
   x = 4,103,052.15/2,608.40
6. Step 6: Final answer
   x = 1,573.02