Finding the Fourth Proportional to 2,191.19, 3,284.63 and 1,092.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,191.19 : 3,284.63 = 1,092.21 : x
2. Step 2: Convert to fraction form
   2,191.19/3,284.63 = 1,092.21/x
3. Step 3: Cross multiply
   2,191.19x = 3,284.63 × 1,092.21
4. Step 4: Simplify right side
   2,191.19x = 3,587,500.27
5. Step 5: Solve for x
   x = 3,587,500.27/2,191.19
6. Step 6: Final answer
   x = 1,637.24