Finding the Fourth Proportional to 1,071.83, 1,481.59 and 985.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,071.83 : 1,481.59 = 985.73 : x
2. Step 2: Convert to fraction form
   1,071.83/1,481.59 = 985.73/x
3. Step 3: Cross multiply
   1,071.83x = 1,481.59 × 985.73
4. Step 4: Simplify right side
   1,071.83x = 1,460,440.30
5. Step 5: Solve for x
   x = 1,460,440.30/1,071.83
6. Step 6: Final answer
   x = 1,362.57