Finding the Fourth Proportional to 1,645.82, 2,271.02 and 982.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,645.82 : 2,271.02 = 982.83 : x
2. Step 2: Convert to fraction form
   1,645.82/2,271.02 = 982.83/x
3. Step 3: Cross multiply
   1,645.82x = 2,271.02 × 982.83
4. Step 4: Simplify right side
   1,645.82x = 2,232,021.67
5. Step 5: Solve for x
   x = 2,232,021.67/1,645.82
6. Step 6: Final answer
   x = 1,356.18