Finding the Fourth Proportional to 2,345.16, 3,507.24 and 2,086.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,345.16 : 3,507.24 = 2,086.68 : x
2. Step 2: Convert to fraction form
   2,345.16/3,507.24 = 2,086.68/x
3. Step 3: Cross multiply
   2,345.16x = 3,507.24 × 2,086.68
4. Step 4: Simplify right side
   2,345.16x = 7,318,487.56
5. Step 5: Solve for x
   x = 7,318,487.56/2,345.16
6. Step 6: Final answer
   x = 3,120.68