Finding the Fourth Proportional to 2,148.39, 2,965.32 and 1,264.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,148.39 : 2,965.32 = 1,264.47 : x
2. Step 2: Convert to fraction form
   2,148.39/2,965.32 = 1,264.47/x
3. Step 3: Cross multiply
   2,148.39x = 2,965.32 × 1,264.47
4. Step 4: Simplify right side
   2,148.39x = 3,749,569.69
5. Step 5: Solve for x
   x = 3,749,569.69/2,148.39
6. Step 6: Final answer
   x = 1,745.30