Finding the Fourth Proportional to 1,680.89, 2,314.81 and 1,675.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,680.89 : 2,314.81 = 1,675.42 : x
2. Step 2: Convert to fraction form
   1,680.89/2,314.81 = 1,675.42/x
3. Step 3: Cross multiply
   1,680.89x = 2,314.81 × 1,675.42
4. Step 4: Simplify right side
   1,680.89x = 3,878,278.97
5. Step 5: Solve for x
   x = 3,878,278.97/1,680.89
6. Step 6: Final answer
   x = 2,307.28