Finding the Fourth Proportional to 2,978.01, 4,440.77 and 2,770.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.01 : 4,440.77 = 2,770.23 : x
2. Step 2: Convert to fraction form
   2,978.01/4,440.77 = 2,770.23/x
3. Step 3: Cross multiply
   2,978.01x = 4,440.77 × 2,770.23
4. Step 4: Simplify right side
   2,978.01x = 12,301,961.20
5. Step 5: Solve for x
   x = 12,301,961.20/2,978.01
6. Step 6: Final answer
   x = 4,130.93