Finding the Fourth Proportional to 2,002.80, 3,004.60 and 705.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,002.80 : 3,004.60 = 705.18 : x
2. Step 2: Convert to fraction form
   2,002.80/3,004.60 = 705.18/x
3. Step 3: Cross multiply
   2,002.80x = 3,004.60 × 705.18
4. Step 4: Simplify right side
   2,002.80x = 2,118,783.83
5. Step 5: Solve for x
   x = 2,118,783.83/2,002.80
6. Step 6: Final answer
   x = 1,057.91