Finding the Fourth Proportional to 2,104.78, 2,904.78 and 1,265.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,104.78 : 2,904.78 = 1,265.62 : x
2. Step 2: Convert to fraction form
   2,104.78/2,904.78 = 1,265.62/x
3. Step 3: Cross multiply
   2,104.78x = 2,904.78 × 1,265.62
4. Step 4: Simplify right side
   2,104.78x = 3,676,347.66
5. Step 5: Solve for x
   x = 3,676,347.66/2,104.78
6. Step 6: Final answer
   x = 1,746.67