Finding the Fourth Proportional to 2,320.09, 3,478.48 and 1,086.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,320.09 : 3,478.48 = 1,086.82 : x
2. Step 2: Convert to fraction form
   2,320.09/3,478.48 = 1,086.82/x
3. Step 3: Cross multiply
   2,320.09x = 3,478.48 × 1,086.82
4. Step 4: Simplify right side
   2,320.09x = 3,780,487.75
5. Step 5: Solve for x
   x = 3,780,487.75/2,320.09
6. Step 6: Final answer
   x = 1,629.46