Finding the Fourth Proportional to 1,261.92, 1,892.52 and 481.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,261.92 : 1,892.52 = 481.42 : x
2. Step 2: Convert to fraction form
   1,261.92/1,892.52 = 481.42/x
3. Step 3: Cross multiply
   1,261.92x = 1,892.52 × 481.42
4. Step 4: Simplify right side
   1,261.92x = 911,096.98
5. Step 5: Solve for x
   x = 911,096.98/1,261.92
6. Step 6: Final answer
   x = 721.99