Finding the Fourth Proportional to 2,069.89, 2,856.25 and 1,230.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,069.89 : 2,856.25 = 1,230.37 : x
2. Step 2: Convert to fraction form
   2,069.89/2,856.25 = 1,230.37/x
3. Step 3: Cross multiply
   2,069.89x = 2,856.25 × 1,230.37
4. Step 4: Simplify right side
   2,069.89x = 3,514,244.31
5. Step 5: Solve for x
   x = 3,514,244.31/2,069.89
6. Step 6: Final answer
   x = 1,697.79