Finding the Fourth Proportional to 1,333.50, 1,839.42 and 885.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,333.50 : 1,839.42 = 885.39 : x
2. Step 2: Convert to fraction form
   1,333.50/1,839.42 = 885.39/x
3. Step 3: Cross multiply
   1,333.50x = 1,839.42 × 885.39
4. Step 4: Simplify right side
   1,333.50x = 1,628,599.65
5. Step 5: Solve for x
   x = 1,628,599.65/1,333.50
6. Step 6: Final answer
   x = 1,221.30