Finding the Fourth Proportional to 1,868.72, 2,579.40 and 1,082.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,868.72 : 2,579.40 = 1,082.96 : x
2. Step 2: Convert to fraction form
   1,868.72/2,579.40 = 1,082.96/x
3. Step 3: Cross multiply
   1,868.72x = 2,579.40 × 1,082.96
4. Step 4: Simplify right side
   1,868.72x = 2,793,387.02
5. Step 5: Solve for x
   x = 2,793,387.02/1,868.72
6. Step 6: Final answer
   x = 1,494.81