Finding the Fourth Proportional to 1,367.69, 1,888.11 and 969.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,367.69 : 1,888.11 = 969.71 : x
2. Step 2: Convert to fraction form
   1,367.69/1,888.11 = 969.71/x
3. Step 3: Cross multiply
   1,367.69x = 1,888.11 × 969.71
4. Step 4: Simplify right side
   1,367.69x = 1,830,909.71
5. Step 5: Solve for x
   x = 1,830,909.71/1,367.69
6. Step 6: Final answer
   x = 1,338.69