Finding the Fourth Proportional to 2,906.79, 4,007.46 and 1,911.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,906.79 : 4,007.46 = 1,911.69 : x
2. Step 2: Convert to fraction form
   2,906.79/4,007.46 = 1,911.69/x
3. Step 3: Cross multiply
   2,906.79x = 4,007.46 × 1,911.69
4. Step 4: Simplify right side
   2,906.79x = 7,661,021.21
5. Step 5: Solve for x
   x = 7,661,021.21/2,906.79
6. Step 6: Final answer
   x = 2,635.56