Finding the Fourth Proportional to 1,483.76, 2,047.56 and 820.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,483.76 : 2,047.56 = 820.60 : x
2. Step 2: Convert to fraction form
   1,483.76/2,047.56 = 820.60/x
3. Step 3: Cross multiply
   1,483.76x = 2,047.56 × 820.60
4. Step 4: Simplify right side
   1,483.76x = 1,680,227.74
5. Step 5: Solve for x
   x = 1,680,227.74/1,483.76
6. Step 6: Final answer
   x = 1,132.41