Finding the Fourth Proportional to 1,778.82, 2,666.79 and 1,154.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,778.82 : 2,666.79 = 1,154.76 : x
2. Step 2: Convert to fraction form
   1,778.82/2,666.79 = 1,154.76/x
3. Step 3: Cross multiply
   1,778.82x = 2,666.79 × 1,154.76
4. Step 4: Simplify right side
   1,778.82x = 3,079,502.42
5. Step 5: Solve for x
   x = 3,079,502.42/1,778.82
6. Step 6: Final answer
   x = 1,731.21