Finding the Fourth Proportional to 1,432.55, 1,976.87 and 872.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,432.55 : 1,976.87 = 872.82 : x
2. Step 2: Convert to fraction form
   1,432.55/1,976.87 = 872.82/x
3. Step 3: Cross multiply
   1,432.55x = 1,976.87 × 872.82
4. Step 4: Simplify right side
   1,432.55x = 1,725,453.86
5. Step 5: Solve for x
   x = 1,725,453.86/1,432.55
6. Step 6: Final answer
   x = 1,204.46