Finding the Fourth Proportional to 1,818.82, 2,508.63 and 1,155.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,818.82 : 2,508.63 = 1,155.10 : x
2. Step 2: Convert to fraction form
   1,818.82/2,508.63 = 1,155.10/x
3. Step 3: Cross multiply
   1,818.82x = 2,508.63 × 1,155.10
4. Step 4: Simplify right side
   1,818.82x = 2,897,718.51
5. Step 5: Solve for x
   x = 2,897,718.51/1,818.82
6. Step 6: Final answer
   x = 1,593.19