Finding the Fourth Proportional to 2,091.92, 3,138.37 and 705.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,091.92 : 3,138.37 = 705.23 : x
2. Step 2: Convert to fraction form
   2,091.92/3,138.37 = 705.23/x
3. Step 3: Cross multiply
   2,091.92x = 3,138.37 × 705.23
4. Step 4: Simplify right side
   2,091.92x = 2,213,255.22
5. Step 5: Solve for x
   x = 2,213,255.22/2,091.92
6. Step 6: Final answer
   x = 1,058.00