Finding the Fourth Proportional to 2,385.03, 3,291.30 and 1,308.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,385.03 : 3,291.30 = 1,308.30 : x
2. Step 2: Convert to fraction form
   2,385.03/3,291.30 = 1,308.30/x
3. Step 3: Cross multiply
   2,385.03x = 3,291.30 × 1,308.30
4. Step 4: Simplify right side
   2,385.03x = 4,306,007.79
5. Step 5: Solve for x
   x = 4,306,007.79/2,385.03
6. Step 6: Final answer
   x = 1,805.43