Finding the Fourth Proportional to 1,432.29, 1,976.04 and 872.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,432.29 : 1,976.04 = 872.37 : x
2. Step 2: Convert to fraction form
   1,432.29/1,976.04 = 872.37/x
3. Step 3: Cross multiply
   1,432.29x = 1,976.04 × 872.37
4. Step 4: Simplify right side
   1,432.29x = 1,723,838.01
5. Step 5: Solve for x
   x = 1,723,838.01/1,432.29
6. Step 6: Final answer
   x = 1,203.55