Finding the Fourth Proportional to 1,205.91, 1,674.56 and 1,196.19

Step by Step Solution

1. Step 1: Write the proportion equation
   1,205.91 : 1,674.56 = 1,196.19 : x
2. Step 2: Convert to fraction form
   1,205.91/1,674.56 = 1,196.19/x
3. Step 3: Cross multiply
   1,205.91x = 1,674.56 × 1,196.19
4. Step 4: Simplify right side
   1,205.91x = 2,003,094.92
5. Step 5: Solve for x
   x = 2,003,094.92/1,205.91
6. Step 6: Final answer
   x = 1,661.07