Finding the Fourth Proportional to 1,995.27, 2,991.30 and 1,007.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,995.27 : 2,991.30 = 1,007.55 : x
2. Step 2: Convert to fraction form
   1,995.27/2,991.30 = 1,007.55/x
3. Step 3: Cross multiply
   1,995.27x = 2,991.30 × 1,007.55
4. Step 4: Simplify right side
   1,995.27x = 3,013,884.32
5. Step 5: Solve for x
   x = 3,013,884.32/1,995.27
6. Step 6: Final answer
   x = 1,510.51