Finding the Fourth Proportional to 2,636.10, 3,954.24 and 904.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,636.10 : 3,954.24 = 904.86 : x
2. Step 2: Convert to fraction form
   2,636.10/3,954.24 = 904.86/x
3. Step 3: Cross multiply
   2,636.10x = 3,954.24 × 904.86
4. Step 4: Simplify right side
   2,636.10x = 3,578,033.61
5. Step 5: Solve for x
   x = 3,578,033.61/2,636.10
6. Step 6: Final answer
   x = 1,357.32