Finding the Fourth Proportional to 2,017.64, 2,784.50 and 1,231.85

Step by Step Solution

1. Step 1: Write the proportion equation
   2,017.64 : 2,784.50 = 1,231.85 : x
2. Step 2: Convert to fraction form
   2,017.64/2,784.50 = 1,231.85/x
3. Step 3: Cross multiply
   2,017.64x = 2,784.50 × 1,231.85
4. Step 4: Simplify right side
   2,017.64x = 3,430,066.24
5. Step 5: Solve for x
   x = 3,430,066.24/2,017.64
6. Step 6: Final answer
   x = 1,700.04