Finding the Fourth Proportional to 1,921.39, 2,651.69 and 1,082.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,921.39 : 2,651.69 = 1,082.30 : x
2. Step 2: Convert to fraction form
   1,921.39/2,651.69 = 1,082.30/x
3. Step 3: Cross multiply
   1,921.39x = 2,651.69 × 1,082.30
4. Step 4: Simplify right side
   1,921.39x = 2,869,907.45
5. Step 5: Solve for x
   x = 2,869,907.45/1,921.39
6. Step 6: Final answer
   x = 1,493.66