Finding the Fourth Proportional to 2,825.65, 4,237.76 and 1,264.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,825.65 : 4,237.76 = 1,264.78 : x
2. Step 2: Convert to fraction form
   2,825.65/4,237.76 = 1,264.78/x
3. Step 3: Cross multiply
   2,825.65x = 4,237.76 × 1,264.78
4. Step 4: Simplify right side
   2,825.65x = 5,359,834.09
5. Step 5: Solve for x
   x = 5,359,834.09/2,825.65
6. Step 6: Final answer
   x = 1,896.85