Finding the Fourth Proportional to 1,745.27, 2,614.82 and 921.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,745.27 : 2,614.82 = 921.72 : x
2. Step 2: Convert to fraction form
   1,745.27/2,614.82 = 921.72/x
3. Step 3: Cross multiply
   1,745.27x = 2,614.82 × 921.72
4. Step 4: Simplify right side
   1,745.27x = 2,410,131.89
5. Step 5: Solve for x
   x = 2,410,131.89/1,745.27
6. Step 6: Final answer
   x = 1,380.95