Finding the Fourth Proportional to 2,926.37, 4,389.76 and 978.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,926.37 : 4,389.76 = 978.32 : x
2. Step 2: Convert to fraction form
   2,926.37/4,389.76 = 978.32/x
3. Step 3: Cross multiply
   2,926.37x = 4,389.76 × 978.32
4. Step 4: Simplify right side
   2,926.37x = 4,294,587.56
5. Step 5: Solve for x
   x = 4,294,587.56/2,926.37
6. Step 6: Final answer
   x = 1,467.55