Finding the Fourth Proportional to 1,082.39, 1,620.52 and 841.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,082.39 : 1,620.52 = 841.73 : x
2. Step 2: Convert to fraction form
   1,082.39/1,620.52 = 841.73/x
3. Step 3: Cross multiply
   1,082.39x = 1,620.52 × 841.73
4. Step 4: Simplify right side
   1,082.39x = 1,364,040.30
5. Step 5: Solve for x
   x = 1,364,040.30/1,082.39
6. Step 6: Final answer
   x = 1,260.21