Finding the Fourth Proportional to 2,345.74, 3,237.06 and 1,297.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,345.74 : 3,237.06 = 1,297.78 : x
2. Step 2: Convert to fraction form
   2,345.74/3,237.06 = 1,297.78/x
3. Step 3: Cross multiply
   2,345.74x = 3,237.06 × 1,297.78
4. Step 4: Simplify right side
   2,345.74x = 4,200,991.73
5. Step 5: Solve for x
   x = 4,200,991.73/2,345.74
6. Step 6: Final answer
   x = 1,790.90