Finding the Fourth Proportional to 2,801.06, 4,200.61 and 826.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,801.06 : 4,200.61 = 826.16 : x
2. Step 2: Convert to fraction form
   2,801.06/4,200.61 = 826.16/x
3. Step 3: Cross multiply
   2,801.06x = 4,200.61 × 826.16
4. Step 4: Simplify right side
   2,801.06x = 3,470,395.38
5. Step 5: Solve for x
   x = 3,470,395.38/2,801.06
6. Step 6: Final answer
   x = 1,238.96