Finding the Fourth Proportional to 2,654.71, 3,994.75 and 2,189.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,654.71 : 3,994.75 = 2,189.57 : x
2. Step 2: Convert to fraction form
   2,654.71/3,994.75 = 2,189.57/x
3. Step 3: Cross multiply
   2,654.71x = 3,994.75 × 2,189.57
4. Step 4: Simplify right side
   2,654.71x = 8,746,784.76
5. Step 5: Solve for x
   x = 8,746,784.76/2,654.71
6. Step 6: Final answer
   x = 3,294.82