Finding the Fourth Proportional to 2,017.42, 2,784.17 and 1,121.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,017.42 : 2,784.17 = 1,121.29 : x
2. Step 2: Convert to fraction form
   2,017.42/2,784.17 = 1,121.29/x
3. Step 3: Cross multiply
   2,017.42x = 2,784.17 × 1,121.29
4. Step 4: Simplify right side
   2,017.42x = 3,121,861.98
5. Step 5: Solve for x
   x = 3,121,861.98/2,017.42
6. Step 6: Final answer
   x = 1,547.45