Finding the Fourth Proportional to 2,381.15, 3,286.37 and 1,820.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,381.15 : 3,286.37 = 1,820.54 : x
2. Step 2: Convert to fraction form
   2,381.15/3,286.37 = 1,820.54/x
3. Step 3: Cross multiply
   2,381.15x = 3,286.37 × 1,820.54
4. Step 4: Simplify right side
   2,381.15x = 5,982,968.04
5. Step 5: Solve for x
   x = 5,982,968.04/2,381.15
6. Step 6: Final answer
   x = 2,512.64