Finding the Fourth Proportional to 2,151.72, 2,969.82 and 1,267.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,151.72 : 2,969.82 = 1,267.38 : x
2. Step 2: Convert to fraction form
   2,151.72/2,969.82 = 1,267.38/x
3. Step 3: Cross multiply
   2,151.72x = 2,969.82 × 1,267.38
4. Step 4: Simplify right side
   2,151.72x = 3,763,890.47
5. Step 5: Solve for x
   x = 3,763,890.47/2,151.72
6. Step 6: Final answer
   x = 1,749.25