Finding the Fourth Proportional to 2,171.56, 2,996.84 and 1,705

Step by Step Solution

1. Step 1: Write the proportion equation
   2,171.56 : 2,996.84 = 1,705 : x
2. Step 2: Convert to fraction form
   2,171.56/2,996.84 = 1,705/x
3. Step 3: Cross multiply
   2,171.56x = 2,996.84 × 1,705
4. Step 4: Simplify right side
   2,171.56x = 5,109,612.20
5. Step 5: Solve for x
   x = 5,109,612.20/2,171.56
6. Step 6: Final answer
   x = 2,352.97