Finding the Fourth Proportional to 1,802.46, 2,697.81 and 978.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,802.46 : 2,697.81 = 978.69 : x
2. Step 2: Convert to fraction form
   1,802.46/2,697.81 = 978.69/x
3. Step 3: Cross multiply
   1,802.46x = 2,697.81 × 978.69
4. Step 4: Simplify right side
   1,802.46x = 2,640,319.67
5. Step 5: Solve for x
   x = 2,640,319.67/1,802.46
6. Step 6: Final answer
   x = 1,464.84