Finding the Fourth Proportional to 2,870.31, 3,960.59 and 1,675.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,870.31 : 3,960.59 = 1,675.29 : x
2. Step 2: Convert to fraction form
   2,870.31/3,960.59 = 1,675.29/x
3. Step 3: Cross multiply
   2,870.31x = 3,960.59 × 1,675.29
4. Step 4: Simplify right side
   2,870.31x = 6,635,128.44
5. Step 5: Solve for x
   x = 6,635,128.44/2,870.31
6. Step 6: Final answer
   x = 2,311.64