Finding the Fourth Proportional to 2,365.32, 3,546.73 and 978.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,365.32 : 3,546.73 = 978.40 : x
2. Step 2: Convert to fraction form
   2,365.32/3,546.73 = 978.40/x
3. Step 3: Cross multiply
   2,365.32x = 3,546.73 × 978.40
4. Step 4: Simplify right side
   2,365.32x = 3,470,120.63
5. Step 5: Solve for x
   x = 3,470,120.63/2,365.32
6. Step 6: Final answer
   x = 1,467.08