Finding the Fourth Proportional to 1,504.86, 2,254.86 and 1,139.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,504.86 : 2,254.86 = 1,139.15 : x
2. Step 2: Convert to fraction form
   1,504.86/2,254.86 = 1,139.15/x
3. Step 3: Cross multiply
   1,504.86x = 2,254.86 × 1,139.15
4. Step 4: Simplify right side
   1,504.86x = 2,568,612.49
5. Step 5: Solve for x
   x = 2,568,612.49/1,504.86
6. Step 6: Final answer
   x = 1,706.88