Finding the Fourth Proportional to 1,768.39, 2,440.27 and 971.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,768.39 : 2,440.27 = 971.56 : x
2. Step 2: Convert to fraction form
   1,768.39/2,440.27 = 971.56/x
3. Step 3: Cross multiply
   1,768.39x = 2,440.27 × 971.56
4. Step 4: Simplify right side
   1,768.39x = 2,370,868.72
5. Step 5: Solve for x
   x = 2,370,868.72/1,768.39
6. Step 6: Final answer
   x = 1,340.69