Finding the Fourth Proportional to 2,632.47, 3,943.05 and 1,243.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,632.47 : 3,943.05 = 1,243.72 : x
2. Step 2: Convert to fraction form
   2,632.47/3,943.05 = 1,243.72/x
3. Step 3: Cross multiply
   2,632.47x = 3,943.05 × 1,243.72
4. Step 4: Simplify right side
   2,632.47x = 4,904,050.41
5. Step 5: Solve for x
   x = 4,904,050.41/2,632.47
6. Step 6: Final answer
   x = 1,862.91