Finding the Fourth Proportional to 1,817.32, 2,508.17 and 1,109.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,817.32 : 2,508.17 = 1,109.57 : x
2. Step 2: Convert to fraction form
   1,817.32/2,508.17 = 1,109.57/x
3. Step 3: Cross multiply
   1,817.32x = 2,508.17 × 1,109.57
4. Step 4: Simplify right side
   1,817.32x = 2,782,992.45
5. Step 5: Solve for x
   x = 2,782,992.45/1,817.32
6. Step 6: Final answer
   x = 1,531.38