Finding the Fourth Proportional to 2,672.62, 4,007.39 and 1,111.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,672.62 : 4,007.39 = 1,111.31 : x
2. Step 2: Convert to fraction form
   2,672.62/4,007.39 = 1,111.31/x
3. Step 3: Cross multiply
   2,672.62x = 4,007.39 × 1,111.31
4. Step 4: Simplify right side
   2,672.62x = 4,453,452.58
5. Step 5: Solve for x
   x = 4,453,452.58/2,672.62
6. Step 6: Final answer
   x = 1,666.32