Finding the Fourth Proportional to 3,575.70, 5,362.94 and 978.03

Step by Step Solution

1. Step 1: Write the proportion equation
   3,575.70 : 5,362.94 = 978.03 : x
2. Step 2: Convert to fraction form
   3,575.70/5,362.94 = 978.03/x
3. Step 3: Cross multiply
   3,575.70x = 5,362.94 × 978.03
4. Step 4: Simplify right side
   3,575.70x = 5,245,118.65
5. Step 5: Solve for x
   x = 5,245,118.65/3,575.70
6. Step 6: Final answer
   x = 1,466.88