Finding the Fourth Proportional to 2,139.34, 2,952.35 and 1,243.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,139.34 : 2,952.35 = 1,243.01 : x
2. Step 2: Convert to fraction form
   2,139.34/2,952.35 = 1,243.01/x
3. Step 3: Cross multiply
   2,139.34x = 2,952.35 × 1,243.01
4. Step 4: Simplify right side
   2,139.34x = 3,669,800.57
5. Step 5: Solve for x
   x = 3,669,800.57/2,139.34
6. Step 6: Final answer
   x = 1,715.39