Finding the Fourth Proportional to 1,082.80, 1,621.86 and 1,006.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,082.80 : 1,621.86 = 1,006.84 : x
2. Step 2: Convert to fraction form
   1,082.80/1,621.86 = 1,006.84/x
3. Step 3: Cross multiply
   1,082.80x = 1,621.86 × 1,006.84
4. Step 4: Simplify right side
   1,082.80x = 1,632,953.52
5. Step 5: Solve for x
   x = 1,632,953.52/1,082.80
6. Step 6: Final answer
   x = 1,508.08