Finding the Fourth Proportional to 2,017.54, 2,784.57 and 1,428.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,017.54 : 2,784.57 = 1,428.10 : x
2. Step 2: Convert to fraction form
   2,017.54/2,784.57 = 1,428.10/x
3. Step 3: Cross multiply
   2,017.54x = 2,784.57 × 1,428.10
4. Step 4: Simplify right side
   2,017.54x = 3,976,644.42
5. Step 5: Solve for x
   x = 3,976,644.42/2,017.54
6. Step 6: Final answer
   x = 1,971.04