Finding the Fourth Proportional to 2,196.08, 3,284.40 and 2,124.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.08 : 3,284.40 = 2,124.80 : x
2. Step 2: Convert to fraction form
   2,196.08/3,284.40 = 2,124.80/x
3. Step 3: Cross multiply
   2,196.08x = 3,284.40 × 2,124.80
4. Step 4: Simplify right side
   2,196.08x = 6,978,693.12
5. Step 5: Solve for x
   x = 6,978,693.12/2,196.08
6. Step 6: Final answer
   x = 3,177.80