Finding the Fourth Proportional to 2,003.56, 3,005.40 and 705.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,003.56 : 3,005.40 = 705.40 : x
2. Step 2: Convert to fraction form
   2,003.56/3,005.40 = 705.40/x
3. Step 3: Cross multiply
   2,003.56x = 3,005.40 × 705.40
4. Step 4: Simplify right side
   2,003.56x = 2,120,009.16
5. Step 5: Solve for x
   x = 2,120,009.16/2,003.56
6. Step 6: Final answer
   x = 1,058.12