Finding the Fourth Proportional to 2,013.93, 3,022.52 and 1,040.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,013.93 : 3,022.52 = 1,040.31 : x
2. Step 2: Convert to fraction form
   2,013.93/3,022.52 = 1,040.31/x
3. Step 3: Cross multiply
   2,013.93x = 3,022.52 × 1,040.31
4. Step 4: Simplify right side
   2,013.93x = 3,144,352.58
5. Step 5: Solve for x
   x = 3,144,352.58/2,013.93
6. Step 6: Final answer
   x = 1,561.30