Finding the Fourth Proportional to 1,281.33, 1,923.82 and 1,222.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,281.33 : 1,923.82 = 1,222.61 : x
2. Step 2: Convert to fraction form
   1,281.33/1,923.82 = 1,222.61/x
3. Step 3: Cross multiply
   1,281.33x = 1,923.82 × 1,222.61
4. Step 4: Simplify right side
   1,281.33x = 2,352,068.89
5. Step 5: Solve for x
   x = 2,352,068.89/1,281.33
6. Step 6: Final answer
   x = 1,835.65