Finding the Fourth Proportional to 1,409.42, 1,944.15 and 885.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,409.42 : 1,944.15 = 885.02 : x
2. Step 2: Convert to fraction form
   1,409.42/1,944.15 = 885.02/x
3. Step 3: Cross multiply
   1,409.42x = 1,944.15 × 885.02
4. Step 4: Simplify right side
   1,409.42x = 1,720,611.63
5. Step 5: Solve for x
   x = 1,720,611.63/1,409.42
6. Step 6: Final answer
   x = 1,220.79