Finding the Fourth Proportional to 2,194.32, 3,289.86 and 1,098.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,194.32 : 3,289.86 = 1,098.12 : x
2. Step 2: Convert to fraction form
   2,194.32/3,289.86 = 1,098.12/x
3. Step 3: Cross multiply
   2,194.32x = 3,289.86 × 1,098.12
4. Step 4: Simplify right side
   2,194.32x = 3,612,661.06
5. Step 5: Solve for x
   x = 3,612,661.06/2,194.32
6. Step 6: Final answer
   x = 1,646.37