Finding the Fourth Proportional to 2,069.30, 2,855.69 and 1,125.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,069.30 : 2,855.69 = 1,125.15 : x
2. Step 2: Convert to fraction form
   2,069.30/2,855.69 = 1,125.15/x
3. Step 3: Cross multiply
   2,069.30x = 2,855.69 × 1,125.15
4. Step 4: Simplify right side
   2,069.30x = 3,213,073.98
5. Step 5: Solve for x
   x = 3,213,073.98/2,069.30
6. Step 6: Final answer
   x = 1,552.74