Finding the Fourth Proportional to 2,069.52, 2,855.82 and 1,138.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,069.52 : 2,855.82 = 1,138.08 : x
2. Step 2: Convert to fraction form
   2,069.52/2,855.82 = 1,138.08/x
3. Step 3: Cross multiply
   2,069.52x = 2,855.82 × 1,138.08
4. Step 4: Simplify right side
   2,069.52x = 3,250,151.63
5. Step 5: Solve for x
   x = 3,250,151.63/2,069.52
6. Step 6: Final answer
   x = 1,570.49