Finding the Fourth Proportional to 2,007.78, 3,012.81 and 1,083.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,007.78 : 3,012.81 = 1,083.32 : x
2. Step 2: Convert to fraction form
   2,007.78/3,012.81 = 1,083.32/x
3. Step 3: Cross multiply
   2,007.78x = 3,012.81 × 1,083.32
4. Step 4: Simplify right side
   2,007.78x = 3,263,822.27
5. Step 5: Solve for x
   x = 3,263,822.27/2,007.78
6. Step 6: Final answer
   x = 1,625.59