Finding the Fourth Proportional to 2,381.15, 3,285.93 and 1,333.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,381.15 : 3,285.93 = 1,333.20 : x
2. Step 2: Convert to fraction form
   2,381.15/3,285.93 = 1,333.20/x
3. Step 3: Cross multiply
   2,381.15x = 3,285.93 × 1,333.20
4. Step 4: Simplify right side
   2,381.15x = 4,380,801.88
5. Step 5: Solve for x
   x = 4,380,801.88/2,381.15
6. Step 6: Final answer
   x = 1,839.79