Finding the Fourth Proportional to 2,017.08, 2,784.06 and 1,231.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,017.08 : 2,784.06 = 1,231.56 : x
2. Step 2: Convert to fraction form
   2,017.08/2,784.06 = 1,231.56/x
3. Step 3: Cross multiply
   2,017.08x = 2,784.06 × 1,231.56
4. Step 4: Simplify right side
   2,017.08x = 3,428,736.93
5. Step 5: Solve for x
   x = 3,428,736.93/2,017.08
6. Step 6: Final answer
   x = 1,699.85