Finding the Fourth Proportional to 2,565.31, 3,537.79 and 1,680.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,565.31 : 3,537.79 = 1,680.79 : x
2. Step 2: Convert to fraction form
   2,565.31/3,537.79 = 1,680.79/x
3. Step 3: Cross multiply
   2,565.31x = 3,537.79 × 1,680.79
4. Step 4: Simplify right side
   2,565.31x = 5,946,282.05
5. Step 5: Solve for x
   x = 5,946,282.05/2,565.31
6. Step 6: Final answer
   x = 2,317.96