Finding the Fourth Proportional to 2,651.81, 3,974.69 and 1,263.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,651.81 : 3,974.69 = 1,263.18 : x
2. Step 2: Convert to fraction form
   2,651.81/3,974.69 = 1,263.18/x
3. Step 3: Cross multiply
   2,651.81x = 3,974.69 × 1,263.18
4. Step 4: Simplify right side
   2,651.81x = 5,020,752.07
5. Step 5: Solve for x
   x = 5,020,752.07/2,651.81
6. Step 6: Final answer
   x = 1,893.33