Finding the Fourth Proportional to 2,170.89, 3,256.83 and 710.19

Step by Step Solution

1. Step 1: Write the proportion equation
   2,170.89 : 3,256.83 = 710.19 : x
2. Step 2: Convert to fraction form
   2,170.89/3,256.83 = 710.19/x
3. Step 3: Cross multiply
   2,170.89x = 3,256.83 × 710.19
4. Step 4: Simplify right side
   2,170.89x = 2,312,968.10
5. Step 5: Solve for x
   x = 2,312,968.10/2,170.89
6. Step 6: Final answer
   x = 1,065.45