Finding the Fourth Proportional to 2,021.78, 3,032.57 and 705.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,021.78 : 3,032.57 = 705.83 : x
2. Step 2: Convert to fraction form
   2,021.78/3,032.57 = 705.83/x
3. Step 3: Cross multiply
   2,021.78x = 3,032.57 × 705.83
4. Step 4: Simplify right side
   2,021.78x = 2,140,478.88
5. Step 5: Solve for x
   x = 2,140,478.88/2,021.78
6. Step 6: Final answer
   x = 1,058.71