Finding the Fourth Proportional to 1,408.81, 1,944.15 and 841.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,408.81 : 1,944.15 = 841.91 : x
2. Step 2: Convert to fraction form
   1,408.81/1,944.15 = 841.91/x
3. Step 3: Cross multiply
   1,408.81x = 1,944.15 × 841.91
4. Step 4: Simplify right side
   1,408.81x = 1,636,795.46
5. Step 5: Solve for x
   x = 1,636,795.46/1,408.81
6. Step 6: Final answer
   x = 1,161.83