Finding the Fourth Proportional to 1,483.86, 2,047.64 and 820.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,483.86 : 2,047.64 = 820.67 : x
2. Step 2: Convert to fraction form
   1,483.86/2,047.64 = 820.67/x
3. Step 3: Cross multiply
   1,483.86x = 2,047.64 × 820.67
4. Step 4: Simplify right side
   1,483.86x = 1,680,443.89
5. Step 5: Solve for x
   x = 1,680,443.89/1,483.86
6. Step 6: Final answer
   x = 1,132.48