Finding the Fourth Proportional to 2,345.56, 3,236.94 and 1,297.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,345.56 : 3,236.94 = 1,297.72 : x
2. Step 2: Convert to fraction form
   2,345.56/3,236.94 = 1,297.72/x
3. Step 3: Cross multiply
   2,345.56x = 3,236.94 × 1,297.72
4. Step 4: Simplify right side
   2,345.56x = 4,200,641.78
5. Step 5: Solve for x
   x = 4,200,641.78/2,345.56
6. Step 6: Final answer
   x = 1,790.89