Finding the Fourth Proportional to 2,242.28, 3,361.80 and 1,145.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,242.28 : 3,361.80 = 1,145.72 : x
2. Step 2: Convert to fraction form
   2,242.28/3,361.80 = 1,145.72/x
3. Step 3: Cross multiply
   2,242.28x = 3,361.80 × 1,145.72
4. Step 4: Simplify right side
   2,242.28x = 3,851,681.50
5. Step 5: Solve for x
   x = 3,851,681.50/2,242.28
6. Step 6: Final answer
   x = 1,717.75