Finding the Fourth Proportional to 2,632.79, 3,943.89 and 1,247.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,632.79 : 3,943.89 = 1,247.46 : x
2. Step 2: Convert to fraction form
   2,632.79/3,943.89 = 1,247.46/x
3. Step 3: Cross multiply
   2,632.79x = 3,943.89 × 1,247.46
4. Step 4: Simplify right side
   2,632.79x = 4,919,846.47
5. Step 5: Solve for x
   x = 4,919,846.47/2,632.79
6. Step 6: Final answer
   x = 1,868.68