Finding the Fourth Proportional to 1,432.27, 1,976.06 and 872.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,432.27 : 1,976.06 = 872.56 : x
2. Step 2: Convert to fraction form
   1,432.27/1,976.06 = 872.56/x
3. Step 3: Cross multiply
   1,432.27x = 1,976.06 × 872.56
4. Step 4: Simplify right side
   1,432.27x = 1,724,230.91
5. Step 5: Solve for x
   x = 1,724,230.91/1,432.27
6. Step 6: Final answer
   x = 1,203.84