Finding the Fourth Proportional to 2,196.74, 3,308.14 and 1,911.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.74 : 3,308.14 = 1,911.62 : x
2. Step 2: Convert to fraction form
   2,196.74/3,308.14 = 1,911.62/x
3. Step 3: Cross multiply
   2,196.74x = 3,308.14 × 1,911.62
4. Step 4: Simplify right side
   2,196.74x = 6,323,897.03
5. Step 5: Solve for x
   x = 6,323,897.03/2,196.74
6. Step 6: Final answer
   x = 2,878.76