Finding the Fourth Proportional to 2,636.28, 3,954.83 and 904.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,636.28 : 3,954.83 = 904.50 : x
2. Step 2: Convert to fraction form
   2,636.28/3,954.83 = 904.50/x
3. Step 3: Cross multiply
   2,636.28x = 3,954.83 × 904.50
4. Step 4: Simplify right side
   2,636.28x = 3,577,139.21
5. Step 5: Solve for x
   x = 3,577,139.21/2,636.28
6. Step 6: Final answer
   x = 1,356.89