Finding the Fourth Proportional to 2,148.20, 2,964.81 and 1,297.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,148.20 : 2,964.81 = 1,297.50 : x
2. Step 2: Convert to fraction form
   2,148.20/2,964.81 = 1,297.50/x
3. Step 3: Cross multiply
   2,148.20x = 2,964.81 × 1,297.50
4. Step 4: Simplify right side
   2,148.20x = 3,846,840.98
5. Step 5: Solve for x
   x = 3,846,840.98/2,148.20
6. Step 6: Final answer
   x = 1,790.73