Finding the Fourth Proportional to 2,472.12, 3,705.48 and 1,085.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,472.12 : 3,705.48 = 1,085.67 : x
2. Step 2: Convert to fraction form
   2,472.12/3,705.48 = 1,085.67/x
3. Step 3: Cross multiply
   2,472.12x = 3,705.48 × 1,085.67
4. Step 4: Simplify right side
   2,472.12x = 4,022,928.47
5. Step 5: Solve for x
   x = 4,022,928.47/2,472.12
6. Step 6: Final answer
   x = 1,627.32