Finding the Fourth Proportional to 2,801.49, 4,201.25 and 826.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,801.49 : 4,201.25 = 826.59 : x
2. Step 2: Convert to fraction form
   2,801.49/4,201.25 = 826.59/x
3. Step 3: Cross multiply
   2,801.49x = 4,201.25 × 826.59
4. Step 4: Simplify right side
   2,801.49x = 3,472,713.21
5. Step 5: Solve for x
   x = 3,472,713.21/2,801.49
6. Step 6: Final answer
   x = 1,239.60