Finding the Fourth Proportional to 1,483.95, 2,047.69 and 820.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,483.95 : 2,047.69 = 820.69 : x
2. Step 2: Convert to fraction form
   1,483.95/2,047.69 = 820.69/x
3. Step 3: Cross multiply
   1,483.95x = 2,047.69 × 820.69
4. Step 4: Simplify right side
   1,483.95x = 1,680,518.71
5. Step 5: Solve for x
   x = 1,680,518.71/1,483.95
6. Step 6: Final answer
   x = 1,132.46