Finding the Fourth Proportional to 2,619.86, 3,932.37 and 1,924.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,619.86 : 3,932.37 = 1,924.57 : x
2. Step 2: Convert to fraction form
   2,619.86/3,932.37 = 1,924.57/x
3. Step 3: Cross multiply
   2,619.86x = 3,932.37 × 1,924.57
4. Step 4: Simplify right side
   2,619.86x = 7,568,131.16
5. Step 5: Solve for x
   x = 7,568,131.16/2,619.86
6. Step 6: Final answer
   x = 2,888.76