Finding the Fourth Proportional to 1,043.29, 1,436.46 and 885.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,043.29 : 1,436.46 = 885.59 : x
2. Step 2: Convert to fraction form
   1,043.29/1,436.46 = 885.59/x
3. Step 3: Cross multiply
   1,043.29x = 1,436.46 × 885.59
4. Step 4: Simplify right side
   1,043.29x = 1,272,114.61
5. Step 5: Solve for x
   x = 1,272,114.61/1,043.29
6. Step 6: Final answer
   x = 1,219.33