Finding the Fourth Proportional to 2,471.72, 3,705.14 and 1,085.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,471.72 : 3,705.14 = 1,085.81 : x
2. Step 2: Convert to fraction form
   2,471.72/3,705.14 = 1,085.81/x
3. Step 3: Cross multiply
   2,471.72x = 3,705.14 × 1,085.81
4. Step 4: Simplify right side
   2,471.72x = 4,023,062.25
5. Step 5: Solve for x
   x = 4,023,062.25/2,471.72
6. Step 6: Final answer
   x = 1,627.64