Finding the Fourth Proportional to 2,385.06, 3,291.30 and 1,322.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,385.06 : 3,291.30 = 1,322.79 : x
2. Step 2: Convert to fraction form
   2,385.06/3,291.30 = 1,322.79/x
3. Step 3: Cross multiply
   2,385.06x = 3,291.30 × 1,322.79
4. Step 4: Simplify right side
   2,385.06x = 4,353,698.73
5. Step 5: Solve for x
   x = 4,353,698.73/2,385.06
6. Step 6: Final answer
   x = 1,825.40