Finding the Fourth Proportional to 1,322.69, 1,821.47 and 1,238.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,322.69 : 1,821.47 = 1,238.18 : x
2. Step 2: Convert to fraction form
   1,322.69/1,821.47 = 1,238.18/x
3. Step 3: Cross multiply
   1,322.69x = 1,821.47 × 1,238.18
4. Step 4: Simplify right side
   1,322.69x = 2,255,295.91
5. Step 5: Solve for x
   x = 2,255,295.91/1,322.69
6. Step 6: Final answer
   x = 1,705.08