Finding the Fourth Proportional to 1,417.32, 1,955.22 and 857.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,417.32 : 1,955.22 = 857.43 : x
2. Step 2: Convert to fraction form
   1,417.32/1,955.22 = 857.43/x
3. Step 3: Cross multiply
   1,417.32x = 1,955.22 × 857.43
4. Step 4: Simplify right side
   1,417.32x = 1,676,464.28
5. Step 5: Solve for x
   x = 1,676,464.28/1,417.32
6. Step 6: Final answer
   x = 1,182.84