Finding the Fourth Proportional to 1,921.88, 2,651.60 and 1,082.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,921.88 : 2,651.60 = 1,082.46 : x
2. Step 2: Convert to fraction form
   1,921.88/2,651.60 = 1,082.46/x
3. Step 3: Cross multiply
   1,921.88x = 2,651.60 × 1,082.46
4. Step 4: Simplify right side
   1,921.88x = 2,870,250.94
5. Step 5: Solve for x
   x = 2,870,250.94/1,921.88
6. Step 6: Final answer
   x = 1,493.46