Finding the Fourth Proportional to 2,335.14, 3,222.69 and 1,287.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,335.14 : 3,222.69 = 1,287.42 : x
2. Step 2: Convert to fraction form
   2,335.14/3,222.69 = 1,287.42/x
3. Step 3: Cross multiply
   2,335.14x = 3,222.69 × 1,287.42
4. Step 4: Simplify right side
   2,335.14x = 4,148,955.56
5. Step 5: Solve for x
   x = 4,148,955.56/2,335.14
6. Step 6: Final answer
   x = 1,776.75