Finding the Fourth Proportional to 1,768.12, 2,439.98 and 982.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,768.12 : 2,439.98 = 982.15 : x
2. Step 2: Convert to fraction form
   1,768.12/2,439.98 = 982.15/x
3. Step 3: Cross multiply
   1,768.12x = 2,439.98 × 982.15
4. Step 4: Simplify right side
   1,768.12x = 2,396,428.81
5. Step 5: Solve for x
   x = 2,396,428.81/1,768.12
6. Step 6: Final answer
   x = 1,355.35