Finding the Fourth Proportional to 1,806.94, 2,493.58 and 978.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,806.94 : 2,493.58 = 978.94 : x
2. Step 2: Convert to fraction form
   1,806.94/2,493.58 = 978.94/x
3. Step 3: Cross multiply
   1,806.94x = 2,493.58 × 978.94
4. Step 4: Simplify right side
   1,806.94x = 2,441,056.52
5. Step 5: Solve for x
   x = 2,441,056.52/1,806.94
6. Step 6: Final answer
   x = 1,350.94