Finding the Fourth Proportional to 1,809.15, 2,498.17 and 1,147.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,809.15 : 2,498.17 = 1,147.18 : x
2. Step 2: Convert to fraction form
   1,809.15/2,498.17 = 1,147.18/x
3. Step 3: Cross multiply
   1,809.15x = 2,498.17 × 1,147.18
4. Step 4: Simplify right side
   1,809.15x = 2,865,850.66
5. Step 5: Solve for x
   x = 2,865,850.66/1,809.15
6. Step 6: Final answer
   x = 1,584.09