Finding the Fourth Proportional to 2,825.15, 4,231.94 and 1,322.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,825.15 : 4,231.94 = 1,322.01 : x
2. Step 2: Convert to fraction form
   2,825.15/4,231.94 = 1,322.01/x
3. Step 3: Cross multiply
   2,825.15x = 4,231.94 × 1,322.01
4. Step 4: Simplify right side
   2,825.15x = 5,594,667.00
5. Step 5: Solve for x
   x = 5,594,667.00/2,825.15
6. Step 6: Final answer
   x = 1,980.31