Finding the Fourth Proportional to 1,483.67, 2,047.31 and 854.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,483.67 : 2,047.31 = 854.20 : x
2. Step 2: Convert to fraction form
   1,483.67/2,047.31 = 854.20/x
3. Step 3: Cross multiply
   1,483.67x = 2,047.31 × 854.20
4. Step 4: Simplify right side
   1,483.67x = 1,748,813.69
5. Step 5: Solve for x
   x = 1,748,813.69/1,483.67
6. Step 6: Final answer
   x = 1,178.71