Finding the Fourth Proportional to 2,733.55, 4,099.61 and 978.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,733.55 : 4,099.61 = 978.28 : x
2. Step 2: Convert to fraction form
   2,733.55/4,099.61 = 978.28/x
3. Step 3: Cross multiply
   2,733.55x = 4,099.61 × 978.28
4. Step 4: Simplify right side
   2,733.55x = 4,010,558.67
5. Step 5: Solve for x
   x = 4,010,558.67/2,733.55
6. Step 6: Final answer
   x = 1,467.16