Finding the Fourth Proportional to 2,613.31, 3,921.30 and 1,736.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,613.31 : 3,921.30 = 1,736.42 : x
2. Step 2: Convert to fraction form
   2,613.31/3,921.30 = 1,736.42/x
3. Step 3: Cross multiply
   2,613.31x = 3,921.30 × 1,736.42
4. Step 4: Simplify right side
   2,613.31x = 6,809,004.14
5. Step 5: Solve for x
   x = 6,809,004.14/2,613.31
6. Step 6: Final answer
   x = 2,605.51