Finding the Fourth Proportional to 2,003.55, 3,018.68 and 1,808.77

Step by Step Solution

1. Step 1: Write the proportion equation
   2,003.55 : 3,018.68 = 1,808.77 : x
2. Step 2: Convert to fraction form
   2,003.55/3,018.68 = 1,808.77/x
3. Step 3: Cross multiply
   2,003.55x = 3,018.68 × 1,808.77
4. Step 4: Simplify right side
   2,003.55x = 5,460,097.82
5. Step 5: Solve for x
   x = 5,460,097.82/2,003.55
6. Step 6: Final answer
   x = 2,725.21