Finding the Fourth Proportional to 1,774.76, 2,449.12 and 978.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,774.76 : 2,449.12 = 978.09 : x
2. Step 2: Convert to fraction form
   1,774.76/2,449.12 = 978.09/x
3. Step 3: Cross multiply
   1,774.76x = 2,449.12 × 978.09
4. Step 4: Simplify right side
   1,774.76x = 2,395,463.76
5. Step 5: Solve for x
   x = 2,395,463.76/1,774.76
6. Step 6: Final answer
   x = 1,349.74