Finding the Fourth Proportional to 2,294.57, 3,442.46 and 978.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,294.57 : 3,442.46 = 978.39 : x
2. Step 2: Convert to fraction form
   2,294.57/3,442.46 = 978.39/x
3. Step 3: Cross multiply
   2,294.57x = 3,442.46 × 978.39
4. Step 4: Simplify right side
   2,294.57x = 3,368,063.55
5. Step 5: Solve for x
   x = 3,368,063.55/2,294.57
6. Step 6: Final answer
   x = 1,467.84