Finding the Fourth Proportional to 1,336.69, 1,848.59 and 1,170.64

Step by Step Solution

1. Step 1: Write the proportion equation
   1,336.69 : 1,848.59 = 1,170.64 : x
2. Step 2: Convert to fraction form
   1,336.69/1,848.59 = 1,170.64/x
3. Step 3: Cross multiply
   1,336.69x = 1,848.59 × 1,170.64
4. Step 4: Simplify right side
   1,336.69x = 2,164,033.40
5. Step 5: Solve for x
   x = 2,164,033.40/1,336.69
6. Step 6: Final answer
   x = 1,618.95