Finding the Fourth Proportional to 2,166.72, 3,250.31 and 705.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,166.72 : 3,250.31 = 705.53 : x
2. Step 2: Convert to fraction form
   2,166.72/3,250.31 = 705.53/x
3. Step 3: Cross multiply
   2,166.72x = 3,250.31 × 705.53
4. Step 4: Simplify right side
   2,166.72x = 2,293,191.21
5. Step 5: Solve for x
   x = 2,293,191.21/2,166.72
6. Step 6: Final answer
   x = 1,058.37