Finding the Fourth Proportional to 1,923.78, 2,665.97 and 1,886.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,923.78 : 2,665.97 = 1,886.87 : x
2. Step 2: Convert to fraction form
   1,923.78/2,665.97 = 1,886.87/x
3. Step 3: Cross multiply
   1,923.78x = 2,665.97 × 1,886.87
4. Step 4: Simplify right side
   1,923.78x = 5,030,353.73
5. Step 5: Solve for x
   x = 5,030,353.73/1,923.78
6. Step 6: Final answer
   x = 2,614.82