Finding the Fourth Proportional to 2,345.31, 3,236.25 and 1,297.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,345.31 : 3,236.25 = 1,297.35 : x
2. Step 2: Convert to fraction form
   2,345.31/3,236.25 = 1,297.35/x
3. Step 3: Cross multiply
   2,345.31x = 3,236.25 × 1,297.35
4. Step 4: Simplify right side
   2,345.31x = 4,198,548.94
5. Step 5: Solve for x
   x = 4,198,548.94/2,345.31
6. Step 6: Final answer
   x = 1,790.19