Finding the Fourth Proportional to 2,667.96, 3,986.64 and 1,923.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,667.96 : 3,986.64 = 1,923.98 : x
2. Step 2: Convert to fraction form
   2,667.96/3,986.64 = 1,923.98/x
3. Step 3: Cross multiply
   2,667.96x = 3,986.64 × 1,923.98
4. Step 4: Simplify right side
   2,667.96x = 7,670,195.69
5. Step 5: Solve for x
   x = 7,670,195.69/2,667.96
6. Step 6: Final answer
   x = 2,874.93