Finding the Fourth Proportional to 2,196.24, 3,307.38 and 1,911.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.24 : 3,307.38 = 1,911.12 : x
2. Step 2: Convert to fraction form
   2,196.24/3,307.38 = 1,911.12/x
3. Step 3: Cross multiply
   2,196.24x = 3,307.38 × 1,911.12
4. Step 4: Simplify right side
   2,196.24x = 6,320,800.07
5. Step 5: Solve for x
   x = 6,320,800.07/2,196.24
6. Step 6: Final answer
   x = 2,878.01