Finding the Fourth Proportional to 2,139.37, 2,952.57 and 1,300.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,139.37 : 2,952.57 = 1,300.28 : x
2. Step 2: Convert to fraction form
   2,139.37/2,952.57 = 1,300.28/x
3. Step 3: Cross multiply
   2,139.37x = 2,952.57 × 1,300.28
4. Step 4: Simplify right side
   2,139.37x = 3,839,167.72
5. Step 5: Solve for x
   x = 3,839,167.72/2,139.37
6. Step 6: Final answer
   x = 1,794.53