Finding the Fourth Proportional to 2,675.16, 3,690.72 and 1,680.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,675.16 : 3,690.72 = 1,680.06 : x
2. Step 2: Convert to fraction form
   2,675.16/3,690.72 = 1,680.06/x
3. Step 3: Cross multiply
   2,675.16x = 3,690.72 × 1,680.06
4. Step 4: Simplify right side
   2,675.16x = 6,200,631.04
5. Step 5: Solve for x
   x = 6,200,631.04/2,675.16
6. Step 6: Final answer
   x = 2,317.85