Finding the Fourth Proportional to 2,069.39, 2,855.81 and 1,137.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,069.39 : 2,855.81 = 1,137.89 : x
2. Step 2: Convert to fraction form
   2,069.39/2,855.81 = 1,137.89/x
3. Step 3: Cross multiply
   2,069.39x = 2,855.81 × 1,137.89
4. Step 4: Simplify right side
   2,069.39x = 3,249,597.64
5. Step 5: Solve for x
   x = 3,249,597.64/2,069.39
6. Step 6: Final answer
   x = 1,570.32