Finding the Fourth Proportional to 2,615.92, 3,923.99 and 1,300.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,615.92 : 3,923.99 = 1,300.30 : x
2. Step 2: Convert to fraction form
   2,615.92/3,923.99 = 1,300.30/x
3. Step 3: Cross multiply
   2,615.92x = 3,923.99 × 1,300.30
4. Step 4: Simplify right side
   2,615.92x = 5,102,382.15
5. Step 5: Solve for x
   x = 5,102,382.15/2,615.92
6. Step 6: Final answer
   x = 1,950.51