Finding the Fourth Proportional to 2,335.38, 3,222.84 and 1,287.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,335.38 : 3,222.84 = 1,287.46 : x
2. Step 2: Convert to fraction form
   2,335.38/3,222.84 = 1,287.46/x
3. Step 3: Cross multiply
   2,335.38x = 3,222.84 × 1,287.46
4. Step 4: Simplify right side
   2,335.38x = 4,149,277.59
5. Step 5: Solve for x
   x = 4,149,277.59/2,335.38
6. Step 6: Final answer
   x = 1,776.70