Finding the Fourth Proportional to 1,811.85, 2,500.16 and 1,066.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,811.85 : 2,500.16 = 1,066.05 : x
2. Step 2: Convert to fraction form
   1,811.85/2,500.16 = 1,066.05/x
3. Step 3: Cross multiply
   1,811.85x = 2,500.16 × 1,066.05
4. Step 4: Simplify right side
   1,811.85x = 2,665,290.24
5. Step 5: Solve for x
   x = 2,665,290.24/1,811.85
6. Step 6: Final answer
   x = 1,471.03