Finding the Fourth Proportional to 2,116.24, 2,911.56 and 1,929.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,116.24 : 2,911.56 = 1,929.68 : x
2. Step 2: Convert to fraction form
   2,116.24/2,911.56 = 1,929.68/x
3. Step 3: Cross multiply
   2,116.24x = 2,911.56 × 1,929.68
4. Step 4: Simplify right side
   2,116.24x = 5,618,379.10
5. Step 5: Solve for x
   x = 5,618,379.10/2,116.24
6. Step 6: Final answer
   x = 2,654.89