Finding the Fourth Proportional to 2,155.52, 2,976 and 1,328

Step by Step Solution

1. Step 1: Write the proportion equation
   2,155.52 : 2,976 = 1,328 : x
2. Step 2: Convert to fraction form
   2,155.52/2,976 = 1,328/x
3. Step 3: Cross multiply
   2,155.52x = 2,976 × 1,328
4. Step 4: Simplify right side
   2,155.52x = 3,952,128
5. Step 5: Solve for x
   x = 3,952,128/2,155.52
6. Step 6: Final answer
   x = 1,833.49