Finding the Fourth Proportional to 2,315.28, 3,196.72 and 1,432.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,315.28 : 3,196.72 = 1,432.24 : x
2. Step 2: Convert to fraction form
   2,315.28/3,196.72 = 1,432.24/x
3. Step 3: Cross multiply
   2,315.28x = 3,196.72 × 1,432.24
4. Step 4: Simplify right side
   2,315.28x = 4,578,470.25
5. Step 5: Solve for x
   x = 4,578,470.25/2,315.28
6. Step 6: Final answer
   x = 1,977.50