Finding the Fourth Proportional to 1,636.98, 2,258.79 and 1,194.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,636.98 : 2,258.79 = 1,194.12 : x
2. Step 2: Convert to fraction form
   1,636.98/2,258.79 = 1,194.12/x
3. Step 3: Cross multiply
   1,636.98x = 2,258.79 × 1,194.12
4. Step 4: Simplify right side
   1,636.98x = 2,697,266.31
5. Step 5: Solve for x
   x = 2,697,266.31/1,636.98
6. Step 6: Final answer
   x = 1,647.71