Finding the Fourth Proportional to 1,441.94, 2,160.88 and 824.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,441.94 : 2,160.88 = 824.72 : x
2. Step 2: Convert to fraction form
   1,441.94/2,160.88 = 824.72/x
3. Step 3: Cross multiply
   1,441.94x = 2,160.88 × 824.72
4. Step 4: Simplify right side
   1,441.94x = 1,782,120.95
5. Step 5: Solve for x
   x = 1,782,120.95/1,441.94
6. Step 6: Final answer
   x = 1,235.92