Finding the Fourth Proportional to 1,632.72, 2,253.78 and 1,043.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,632.72 : 2,253.78 = 1,043.76 : x
2. Step 2: Convert to fraction form
   1,632.72/2,253.78 = 1,043.76/x
3. Step 3: Cross multiply
   1,632.72x = 2,253.78 × 1,043.76
4. Step 4: Simplify right side
   1,632.72x = 2,352,405.41
5. Step 5: Solve for x
   x = 2,352,405.41/1,632.72
6. Step 6: Final answer
   x = 1,440.79