Finding the Fourth Proportional to 1,357.33, 1,871.83 and 885.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,357.33 : 1,871.83 = 885.59 : x
2. Step 2: Convert to fraction form
   1,357.33/1,871.83 = 885.59/x
3. Step 3: Cross multiply
   1,357.33x = 1,871.83 × 885.59
4. Step 4: Simplify right side
   1,357.33x = 1,657,673.93
5. Step 5: Solve for x
   x = 1,657,673.93/1,357.33
6. Step 6: Final answer
   x = 1,221.28