Finding the Fourth Proportional to 1,791.21, 2,471.82 and 1,005.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,791.21 : 2,471.82 = 1,005.27 : x
2. Step 2: Convert to fraction form
   1,791.21/2,471.82 = 1,005.27/x
3. Step 3: Cross multiply
   1,791.21x = 2,471.82 × 1,005.27
4. Step 4: Simplify right side
   1,791.21x = 2,484,833.45
5. Step 5: Solve for x
   x = 2,484,833.45/1,791.21
6. Step 6: Final answer
   x = 1,387.23