Finding the Fourth Proportional to 2,196.56, 3,295.68 and 1,042.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.56 : 3,295.68 = 1,042.40 : x
2. Step 2: Convert to fraction form
   2,196.56/3,295.68 = 1,042.40/x
3. Step 3: Cross multiply
   2,196.56x = 3,295.68 × 1,042.40
4. Step 4: Simplify right side
   2,196.56x = 3,435,416.83
5. Step 5: Solve for x
   x = 3,435,416.83/2,196.56
6. Step 6: Final answer
   x = 1,564.00