Finding the Fourth Proportional to 2,137.56, 3,204.12 and 1,040.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,137.56 : 3,204.12 = 1,040.40 : x
2. Step 2: Convert to fraction form
   2,137.56/3,204.12 = 1,040.40/x
3. Step 3: Cross multiply
   2,137.56x = 3,204.12 × 1,040.40
4. Step 4: Simplify right side
   2,137.56x = 3,333,566.45
5. Step 5: Solve for x
   x = 3,333,566.45/2,137.56
6. Step 6: Final answer
   x = 1,559.52