Finding the Fourth Proportional to 2,242.55, 3,091.83 and 1,643.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,242.55 : 3,091.83 = 1,643.15 : x
2. Step 2: Convert to fraction form
   2,242.55/3,091.83 = 1,643.15/x
3. Step 3: Cross multiply
   2,242.55x = 3,091.83 × 1,643.15
4. Step 4: Simplify right side
   2,242.55x = 5,080,340.46
5. Step 5: Solve for x
   x = 5,080,340.46/2,242.55
6. Step 6: Final answer
   x = 2,265.43