Finding the Fourth Proportional to 1,300.28, 1,947.90 and 1,007.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,300.28 : 1,947.90 = 1,007.61 : x
2. Step 2: Convert to fraction form
   1,300.28/1,947.90 = 1,007.61/x
3. Step 3: Cross multiply
   1,300.28x = 1,947.90 × 1,007.61
4. Step 4: Simplify right side
   1,300.28x = 1,962,723.52
5. Step 5: Solve for x
   x = 1,962,723.52/1,300.28
6. Step 6: Final answer
   x = 1,509.47