Finding the Fourth Proportional to 1,432.37, 1,978.24 and 985.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,432.37 : 1,978.24 = 985.43 : x
2. Step 2: Convert to fraction form
   1,432.37/1,978.24 = 985.43/x
3. Step 3: Cross multiply
   1,432.37x = 1,978.24 × 985.43
4. Step 4: Simplify right side
   1,432.37x = 1,949,418.25
5. Step 5: Solve for x
   x = 1,949,418.25/1,432.37
6. Step 6: Final answer
   x = 1,360.97