Finding the Fourth Proportional to 1,432.33, 1,976.63 and 872.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,432.33 : 1,976.63 = 872.72 : x
2. Step 2: Convert to fraction form
   1,432.33/1,976.63 = 872.72/x
3. Step 3: Cross multiply
   1,432.33x = 1,976.63 × 872.72
4. Step 4: Simplify right side
   1,432.33x = 1,725,040.17
5. Step 5: Solve for x
   x = 1,725,040.17/1,432.33
6. Step 6: Final answer
   x = 1,204.36