Finding the Fourth Proportional to 2,296.47, 3,446.70 and 1,257.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,296.47 : 3,446.70 = 1,257.42 : x
2. Step 2: Convert to fraction form
   2,296.47/3,446.70 = 1,257.42/x
3. Step 3: Cross multiply
   2,296.47x = 3,446.70 × 1,257.42
4. Step 4: Simplify right side
   2,296.47x = 4,333,949.51
5. Step 5: Solve for x
   x = 4,333,949.51/2,296.47
6. Step 6: Final answer
   x = 1,887.22