Finding the Fourth Proportional to 1,768.23, 2,440.20 and 971.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,768.23 : 2,440.20 = 971.59 : x
2. Step 2: Convert to fraction form
   1,768.23/2,440.20 = 971.59/x
3. Step 3: Cross multiply
   1,768.23x = 2,440.20 × 971.59
4. Step 4: Simplify right side
   1,768.23x = 2,370,879.43
5. Step 5: Solve for x
   x = 2,370,879.43/1,768.23
6. Step 6: Final answer
   x = 1,340.82