Finding the Fourth Proportional to 1,333.68, 1,840.32 and 885.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,333.68 : 1,840.32 = 885.48 : x
2. Step 2: Convert to fraction form
   1,333.68/1,840.32 = 885.48/x
3. Step 3: Cross multiply
   1,333.68x = 1,840.32 × 885.48
4. Step 4: Simplify right side
   1,333.68x = 1,629,566.55
5. Step 5: Solve for x
   x = 1,629,566.55/1,333.68
6. Step 6: Final answer
   x = 1,221.86