Finding the Fourth Proportional to 2,196.20, 3,287.90 and 1,725.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.20 : 3,287.90 = 1,725.80 : x
2. Step 2: Convert to fraction form
   2,196.20/3,287.90 = 1,725.80/x
3. Step 3: Cross multiply
   2,196.20x = 3,287.90 × 1,725.80
4. Step 4: Simplify right side
   2,196.20x = 5,674,257.82
5. Step 5: Solve for x
   x = 5,674,257.82/2,196.20
6. Step 6: Final answer
   x = 2,583.67