Finding the Fourth Proportional to 2,970.77, 4,460.76 and 2,839.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,970.77 : 4,460.76 = 2,839.28 : x
2. Step 2: Convert to fraction form
   2,970.77/4,460.76 = 2,839.28/x
3. Step 3: Cross multiply
   2,970.77x = 4,460.76 × 2,839.28
4. Step 4: Simplify right side
   2,970.77x = 12,665,324.35
5. Step 5: Solve for x
   x = 12,665,324.35/2,970.77
6. Step 6: Final answer
   x = 4,263.32