Finding the Fourth Proportional to 1,968.54, 2,713.86 and 1,338.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,968.54 : 2,713.86 = 1,338.12 : x
2. Step 2: Convert to fraction form
   1,968.54/2,713.86 = 1,338.12/x
3. Step 3: Cross multiply
   1,968.54x = 2,713.86 × 1,338.12
4. Step 4: Simplify right side
   1,968.54x = 3,631,470.34
5. Step 5: Solve for x
   x = 3,631,470.34/1,968.54
6. Step 6: Final answer
   x = 1,844.75