Finding the Fourth Proportional to 2,056.57, 3,085.14 and 669.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,056.57 : 3,085.14 = 669.46 : x
2. Step 2: Convert to fraction form
   2,056.57/3,085.14 = 669.46/x
3. Step 3: Cross multiply
   2,056.57x = 3,085.14 × 669.46
4. Step 4: Simplify right side
   2,056.57x = 2,065,377.82
5. Step 5: Solve for x
   x = 2,065,377.82/2,056.57
6. Step 6: Final answer
   x = 1,004.28