Finding the Fourth Proportional to 1,308.50, 1,962.61 and 384.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,308.50 : 1,962.61 = 384.07 : x
2. Step 2: Convert to fraction form
   1,308.50/1,962.61 = 384.07/x
3. Step 3: Cross multiply
   1,308.50x = 1,962.61 × 384.07
4. Step 4: Simplify right side
   1,308.50x = 753,767.89
5. Step 5: Solve for x
   x = 753,767.89/1,308.50
6. Step 6: Final answer
   x = 576.05