Finding the Fourth Proportional to 1,667.86, 2,499.63 and 1,082.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.86 : 2,499.63 = 1,082.77 : x
2. Step 2: Convert to fraction form
   1,667.86/2,499.63 = 1,082.77/x
3. Step 3: Cross multiply
   1,667.86x = 2,499.63 × 1,082.77
4. Step 4: Simplify right side
   1,667.86x = 2,706,524.38
5. Step 5: Solve for x
   x = 2,706,524.38/1,667.86
6. Step 6: Final answer
   x = 1,622.75