Finding the Fourth Proportional to 2,328.13, 3,212.78 and 1,265.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,328.13 : 3,212.78 = 1,265.86 : x
2. Step 2: Convert to fraction form
   2,328.13/3,212.78 = 1,265.86/x
3. Step 3: Cross multiply
   2,328.13x = 3,212.78 × 1,265.86
4. Step 4: Simplify right side
   2,328.13x = 4,066,929.69
5. Step 5: Solve for x
   x = 4,066,929.69/2,328.13
6. Step 6: Final answer
   x = 1,746.87