Finding the Fourth Proportional to 2,196.30, 3,278.58 and 1,868.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.30 : 3,278.58 = 1,868.16 : x
2. Step 2: Convert to fraction form
   2,196.30/3,278.58 = 1,868.16/x
3. Step 3: Cross multiply
   2,196.30x = 3,278.58 × 1,868.16
4. Step 4: Simplify right side
   2,196.30x = 6,124,912.01
5. Step 5: Solve for x
   x = 6,124,912.01/2,196.30
6. Step 6: Final answer
   x = 2,788.74