Finding the Fourth Proportional to 2,169.57, 2,994.39 and 1,285.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,169.57 : 2,994.39 = 1,285.86 : x
2. Step 2: Convert to fraction form
   2,169.57/2,994.39 = 1,285.86/x
3. Step 3: Cross multiply
   2,169.57x = 2,994.39 × 1,285.86
4. Step 4: Simplify right side
   2,169.57x = 3,850,366.33
5. Step 5: Solve for x
   x = 3,850,366.33/2,169.57
6. Step 6: Final answer
   x = 1,774.71