Finding the Fourth Proportional to 1,734.80, 2,394.06 and 978.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,734.80 : 2,394.06 = 978.52 : x
2. Step 2: Convert to fraction form
   1,734.80/2,394.06 = 978.52/x
3. Step 3: Cross multiply
   1,734.80x = 2,394.06 × 978.52
4. Step 4: Simplify right side
   1,734.80x = 2,342,635.59
5. Step 5: Solve for x
   x = 2,342,635.59/1,734.80
6. Step 6: Final answer
   x = 1,350.38