Finding the Fourth Proportional to 2,091.24, 3,141.72 and 1,226.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,091.24 : 3,141.72 = 1,226.16 : x
2. Step 2: Convert to fraction form
   2,091.24/3,141.72 = 1,226.16/x
3. Step 3: Cross multiply
   2,091.24x = 3,141.72 × 1,226.16
4. Step 4: Simplify right side
   2,091.24x = 3,852,251.40
5. Step 5: Solve for x
   x = 3,852,251.40/2,091.24
6. Step 6: Final answer
   x = 1,842.09