Finding the Fourth Proportional to 1,781.73, 2,456.72 and 1,284.19

Step by Step Solution

1. Step 1: Write the proportion equation
   1,781.73 : 2,456.72 = 1,284.19 : x
2. Step 2: Convert to fraction form
   1,781.73/2,456.72 = 1,284.19/x
3. Step 3: Cross multiply
   1,781.73x = 2,456.72 × 1,284.19
4. Step 4: Simplify right side
   1,781.73x = 3,154,895.26
5. Step 5: Solve for x
   x = 3,154,895.26/1,781.73
6. Step 6: Final answer
   x = 1,770.69