Finding the Fourth Proportional to 2,065.57, 2,849.23 and 1,225.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,065.57 : 2,849.23 = 1,225.71 : x
2. Step 2: Convert to fraction form
   2,065.57/2,849.23 = 1,225.71/x
3. Step 3: Cross multiply
   2,065.57x = 2,849.23 × 1,225.71
4. Step 4: Simplify right side
   2,065.57x = 3,492,333.76
5. Step 5: Solve for x
   x = 3,492,333.76/2,065.57
6. Step 6: Final answer
   x = 1,690.74