Finding the Fourth Proportional to 2,381.79, 3,286.73 and 1,319.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,381.79 : 3,286.73 = 1,319.52 : x
2. Step 2: Convert to fraction form
   2,381.79/3,286.73 = 1,319.52/x
3. Step 3: Cross multiply
   2,381.79x = 3,286.73 × 1,319.52
4. Step 4: Simplify right side
   2,381.79x = 4,336,899.37
5. Step 5: Solve for x
   x = 4,336,899.37/2,381.79
6. Step 6: Final answer
   x = 1,820.86