Finding the Fourth Proportional to 2,381.68, 3,286.72 and 1,333.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,381.68 : 3,286.72 = 1,333.96 : x
2. Step 2: Convert to fraction form
   2,381.68/3,286.72 = 1,333.96/x
3. Step 3: Cross multiply
   2,381.68x = 3,286.72 × 1,333.96
4. Step 4: Simplify right side
   2,381.68x = 4,384,353.01
5. Step 5: Solve for x
   x = 4,384,353.01/2,381.68
6. Step 6: Final answer
   x = 1,840.87