Finding the Fourth Proportional to 2,265.75, 3,398.59 and 786.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,265.75 : 3,398.59 = 786.05 : x
2. Step 2: Convert to fraction form
   2,265.75/3,398.59 = 786.05/x
3. Step 3: Cross multiply
   2,265.75x = 3,398.59 × 786.05
4. Step 4: Simplify right side
   2,265.75x = 2,671,444.42
5. Step 5: Solve for x
   x = 2,671,444.42/2,265.75
6. Step 6: Final answer
   x = 1,179.06