Finding the Fourth Proportional to 2,672.12, 4,002.82 and 1,333.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,672.12 : 4,002.82 = 1,333.88 : x
2. Step 2: Convert to fraction form
   2,672.12/4,002.82 = 1,333.88/x
3. Step 3: Cross multiply
   2,672.12x = 4,002.82 × 1,333.88
4. Step 4: Simplify right side
   2,672.12x = 5,339,281.54
5. Step 5: Solve for x
   x = 5,339,281.54/2,672.12
6. Step 6: Final answer
   x = 1,998.14