Finding the Fourth Proportional to 1,409.44, 1,945.72 and 885.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,409.44 : 1,945.72 = 885.76 : x
2. Step 2: Convert to fraction form
   1,409.44/1,945.72 = 885.76/x
3. Step 3: Cross multiply
   1,409.44x = 1,945.72 × 885.76
4. Step 4: Simplify right side
   1,409.44x = 1,723,440.95
5. Step 5: Solve for x
   x = 1,723,440.95/1,409.44
6. Step 6: Final answer
   x = 1,222.78