Finding the Fourth Proportional to 1,483.99, 2,047.80 and 820.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,483.99 : 2,047.80 = 820.83 : x
2. Step 2: Convert to fraction form
   1,483.99/2,047.80 = 820.83/x
3. Step 3: Cross multiply
   1,483.99x = 2,047.80 × 820.83
4. Step 4: Simplify right side
   1,483.99x = 1,680,895.67
5. Step 5: Solve for x
   x = 1,680,895.67/1,483.99
6. Step 6: Final answer
   x = 1,132.69