Finding the Fourth Proportional to 2,983.42, 4,476.75 and 1,228.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,983.42 : 4,476.75 = 1,228.15 : x
2. Step 2: Convert to fraction form
   2,983.42/4,476.75 = 1,228.15/x
3. Step 3: Cross multiply
   2,983.42x = 4,476.75 × 1,228.15
4. Step 4: Simplify right side
   2,983.42x = 5,498,120.51
5. Step 5: Solve for x
   x = 5,498,120.51/2,983.42
6. Step 6: Final answer
   x = 1,842.89