Finding the Fourth Proportional to 2,636.60, 3,953.98 and 904.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,636.60 : 3,953.98 = 904.82 : x
2. Step 2: Convert to fraction form
   2,636.60/3,953.98 = 904.82/x
3. Step 3: Cross multiply
   2,636.60x = 3,953.98 × 904.82
4. Step 4: Simplify right side
   2,636.60x = 3,577,640.18
5. Step 5: Solve for x
   x = 3,577,640.18/2,636.60
6. Step 6: Final answer
   x = 1,356.91