Finding the Fourth Proportional to 2,619.68, 3,926.05 and 1,923.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,619.68 : 3,926.05 = 1,923.09 : x
2. Step 2: Convert to fraction form
   2,619.68/3,926.05 = 1,923.09/x
3. Step 3: Cross multiply
   2,619.68x = 3,926.05 × 1,923.09
4. Step 4: Simplify right side
   2,619.68x = 7,550,160.87
5. Step 5: Solve for x
   x = 7,550,160.87/2,619.68
6. Step 6: Final answer
   x = 2,882.09