Finding the Fourth Proportional to 1,791.36, 2,472.12 and 1,005.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,791.36 : 2,472.12 = 1,005.48 : x
2. Step 2: Convert to fraction form
   1,791.36/2,472.12 = 1,005.48/x
3. Step 3: Cross multiply
   1,791.36x = 2,472.12 × 1,005.48
4. Step 4: Simplify right side
   1,791.36x = 2,485,667.22
5. Step 5: Solve for x
   x = 2,485,667.22/1,791.36
6. Step 6: Final answer
   x = 1,387.59