Finding the Fourth Proportional to 1,791.47, 2,472.25 and 1,005.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,791.47 : 2,472.25 = 1,005.50 : x
2. Step 2: Convert to fraction form
   1,791.47/2,472.25 = 1,005.50/x
3. Step 3: Cross multiply
   1,791.47x = 2,472.25 × 1,005.50
4. Step 4: Simplify right side
   1,791.47x = 2,485,847.38
5. Step 5: Solve for x
   x = 2,485,847.38/1,791.47
6. Step 6: Final answer
   x = 1,387.60