Finding the Fourth Proportional to 2,167.38, 3,254.31 and 1,243.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,167.38 : 3,254.31 = 1,243.98 : x
2. Step 2: Convert to fraction form
   2,167.38/3,254.31 = 1,243.98/x
3. Step 3: Cross multiply
   2,167.38x = 3,254.31 × 1,243.98
4. Step 4: Simplify right side
   2,167.38x = 4,048,296.55
5. Step 5: Solve for x
   x = 4,048,296.55/2,167.38
6. Step 6: Final answer
   x = 1,867.83