Finding the Fourth Proportional to 1,483.36, 2,046.87 and 820.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,483.36 : 2,046.87 = 820.12 : x
2. Step 2: Convert to fraction form
   1,483.36/2,046.87 = 820.12/x
3. Step 3: Cross multiply
   1,483.36x = 2,046.87 × 820.12
4. Step 4: Simplify right side
   1,483.36x = 1,678,679.02
5. Step 5: Solve for x
   x = 1,678,679.02/1,483.36
6. Step 6: Final answer
   x = 1,131.67