Finding the Fourth Proportional to 1,335.24, 1,842.71 and 886.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,335.24 : 1,842.71 = 886.32 : x
2. Step 2: Convert to fraction form
   1,335.24/1,842.71 = 886.32/x
3. Step 3: Cross multiply
   1,335.24x = 1,842.71 × 886.32
4. Step 4: Simplify right side
   1,335.24x = 1,633,226.30
5. Step 5: Solve for x
   x = 1,633,226.30/1,335.24
6. Step 6: Final answer
   x = 1,223.17