Finding the Fourth Proportional to 1,432.96, 1,978.71 and 1,078.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,432.96 : 1,978.71 = 1,078.27 : x
2. Step 2: Convert to fraction form
   1,432.96/1,978.71 = 1,078.27/x
3. Step 3: Cross multiply
   1,432.96x = 1,978.71 × 1,078.27
4. Step 4: Simplify right side
   1,432.96x = 2,133,583.63
5. Step 5: Solve for x
   x = 2,133,583.63/1,432.96
6. Step 6: Final answer
   x = 1,488.93