Finding the Fourth Proportional to 2,069.88, 2,855.43 and 1,284.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,069.88 : 2,855.43 = 1,284.18 : x
2. Step 2: Convert to fraction form
   2,069.88/2,855.43 = 1,284.18/x
3. Step 3: Cross multiply
   2,069.88x = 2,855.43 × 1,284.18
4. Step 4: Simplify right side
   2,069.88x = 3,666,886.10
5. Step 5: Solve for x
   x = 3,666,886.10/2,069.88
6. Step 6: Final answer
   x = 1,771.55