Finding the Fourth Proportional to 1,432.18, 1,977.02 and 872.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,432.18 : 1,977.02 = 872.83 : x
2. Step 2: Convert to fraction form
   1,432.18/1,977.02 = 872.83/x
3. Step 3: Cross multiply
   1,432.18x = 1,977.02 × 872.83
4. Step 4: Simplify right side
   1,432.18x = 1,725,602.37
5. Step 5: Solve for x
   x = 1,725,602.37/1,432.18
6. Step 6: Final answer
   x = 1,204.88