Finding the Fourth Proportional to 1,805.15, 2,489.33 and 1,097.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,805.15 : 2,489.33 = 1,097.10 : x
2. Step 2: Convert to fraction form
   1,805.15/2,489.33 = 1,097.10/x
3. Step 3: Cross multiply
   1,805.15x = 2,489.33 × 1,097.10
4. Step 4: Simplify right side
   1,805.15x = 2,731,038.46
5. Step 5: Solve for x
   x = 2,731,038.46/1,805.15
6. Step 6: Final answer
   x = 1,512.92