Finding the Fourth Proportional to 2,631.47, 3,944.00 and 1,243.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,631.47 : 3,944.00 = 1,243.17 : x
2. Step 2: Convert to fraction form
   2,631.47/3,944.00 = 1,243.17/x
3. Step 3: Cross multiply
   2,631.47x = 3,944.00 × 1,243.17
4. Step 4: Simplify right side
   2,631.47x = 4,903,056.26
5. Step 5: Solve for x
   x = 4,903,056.26/2,631.47
6. Step 6: Final answer
   x = 1,863.24