Finding the Fourth Proportional to 2,680.16, 3,690.59 and 2,237.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,680.16 : 3,690.59 = 2,237.30 : x
2. Step 2: Convert to fraction form
   2,680.16/3,690.59 = 2,237.30/x
3. Step 3: Cross multiply
   2,680.16x = 3,690.59 × 2,237.30
4. Step 4: Simplify right side
   2,680.16x = 8,256,945.82
5. Step 5: Solve for x
   x = 8,256,945.82/2,680.16
6. Step 6: Final answer
   x = 3,080.77