Finding the Fourth Proportional to 2,092.48, 3,139.20 and 705.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,092.48 : 3,139.20 = 705.72 : x
2. Step 2: Convert to fraction form
   2,092.48/3,139.20 = 705.72/x
3. Step 3: Cross multiply
   2,092.48x = 3,139.20 × 705.72
4. Step 4: Simplify right side
   2,092.48x = 2,215,396.22
5. Step 5: Solve for x
   x = 2,215,396.22/2,092.48
6. Step 6: Final answer
   x = 1,058.74