Finding the Fourth Proportional to 2,381.58, 3,286.56 and 1,319.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,381.58 : 3,286.56 = 1,319.37 : x
2. Step 2: Convert to fraction form
   2,381.58/3,286.56 = 1,319.37/x
3. Step 3: Cross multiply
   2,381.58x = 3,286.56 × 1,319.37
4. Step 4: Simplify right side
   2,381.58x = 4,336,188.67
5. Step 5: Solve for x
   x = 4,336,188.67/2,381.58
6. Step 6: Final answer
   x = 1,820.72