Finding the Fourth Proportional to 2,201.69, 3,300.80 and 1,091.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,201.69 : 3,300.80 = 1,091.49 : x
2. Step 2: Convert to fraction form
   2,201.69/3,300.80 = 1,091.49/x
3. Step 3: Cross multiply
   2,201.69x = 3,300.80 × 1,091.49
4. Step 4: Simplify right side
   2,201.69x = 3,602,772.36
5. Step 5: Solve for x
   x = 3,602,772.36/2,201.69
6. Step 6: Final answer
   x = 1,636.37