Finding the Fourth Proportional to 1,417.14, 1,955.68 and 857.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,417.14 : 1,955.68 = 857.68 : x
2. Step 2: Convert to fraction form
   1,417.14/1,955.68 = 857.68/x
3. Step 3: Cross multiply
   1,417.14x = 1,955.68 × 857.68
4. Step 4: Simplify right side
   1,417.14x = 1,677,347.62
5. Step 5: Solve for x
   x = 1,677,347.62/1,417.14
6. Step 6: Final answer
   x = 1,183.61