Finding the Fourth Proportional to 1,227.34, 1,840.31 and 1,081.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,227.34 : 1,840.31 = 1,081.42 : x
2. Step 2: Convert to fraction form
   1,227.34/1,840.31 = 1,081.42/x
3. Step 3: Cross multiply
   1,227.34x = 1,840.31 × 1,081.42
4. Step 4: Simplify right side
   1,227.34x = 1,990,148.17
5. Step 5: Solve for x
   x = 1,990,148.17/1,227.34
6. Step 6: Final answer
   x = 1,621.52