Finding the Fourth Proportional to 1,921.86, 2,652.22 and 1,082.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,921.86 : 2,652.22 = 1,082.72 : x
2. Step 2: Convert to fraction form
   1,921.86/2,652.22 = 1,082.72/x
3. Step 3: Cross multiply
   1,921.86x = 2,652.22 × 1,082.72
4. Step 4: Simplify right side
   1,921.86x = 2,871,611.64
5. Step 5: Solve for x
   x = 2,871,611.64/1,921.86
6. Step 6: Final answer
   x = 1,494.18