Finding the Fourth Proportional to 1,844.31, 2,768.29 and 978.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,844.31 : 2,768.29 = 978.63 : x
2. Step 2: Convert to fraction form
   1,844.31/2,768.29 = 978.63/x
3. Step 3: Cross multiply
   1,844.31x = 2,768.29 × 978.63
4. Step 4: Simplify right side
   1,844.31x = 2,709,120.25
5. Step 5: Solve for x
   x = 2,709,120.25/1,844.31
6. Step 6: Final answer
   x = 1,468.91