Finding the Fourth Proportional to 1,808.72, 2,496.12 and 1,022.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,808.72 : 2,496.12 = 1,022.76 : x
2. Step 2: Convert to fraction form
   1,808.72/2,496.12 = 1,022.76/x
3. Step 3: Cross multiply
   1,808.72x = 2,496.12 × 1,022.76
4. Step 4: Simplify right side
   1,808.72x = 2,552,931.69
5. Step 5: Solve for x
   x = 2,552,931.69/1,808.72
6. Step 6: Final answer
   x = 1,411.46