Finding the Fourth Proportional to 1,408.84, 1,946.04 and 1,081.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,408.84 : 1,946.04 = 1,081.31 : x
2. Step 2: Convert to fraction form
   1,408.84/1,946.04 = 1,081.31/x
3. Step 3: Cross multiply
   1,408.84x = 1,946.04 × 1,081.31
4. Step 4: Simplify right side
   1,408.84x = 2,104,272.51
5. Step 5: Solve for x
   x = 2,104,272.51/1,408.84
6. Step 6: Final answer
   x = 1,493.62