Finding the Fourth Proportional to 1,321.05, 1,983.06 and 834.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,321.05 : 1,983.06 = 834.38 : x
2. Step 2: Convert to fraction form
   1,321.05/1,983.06 = 834.38/x
3. Step 3: Cross multiply
   1,321.05x = 1,983.06 × 834.38
4. Step 4: Simplify right side
   1,321.05x = 1,654,615.69
5. Step 5: Solve for x
   x = 1,654,615.69/1,321.05
6. Step 6: Final answer
   x = 1,252.50