Finding the Fourth Proportional to 1,308.98, 1,963.52 and 384.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,308.98 : 1,963.52 = 384.54 : x
2. Step 2: Convert to fraction form
   1,308.98/1,963.52 = 384.54/x
3. Step 3: Cross multiply
   1,308.98x = 1,963.52 × 384.54
4. Step 4: Simplify right side
   1,308.98x = 755,052.94
5. Step 5: Solve for x
   x = 755,052.94/1,308.98
6. Step 6: Final answer
   x = 576.82