Finding the Fourth Proportional to 1,775.33, 2,449.84 and 978.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,775.33 : 2,449.84 = 978.59 : x
2. Step 2: Convert to fraction form
   1,775.33/2,449.84 = 978.59/x
3. Step 3: Cross multiply
   1,775.33x = 2,449.84 × 978.59
4. Step 4: Simplify right side
   1,775.33x = 2,397,374.23
5. Step 5: Solve for x
   x = 2,397,374.23/1,775.33
6. Step 6: Final answer
   x = 1,350.39