Finding the Fourth Proportional to 1,082.08, 1,615.73 and 928.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,082.08 : 1,615.73 = 928.18 : x
2. Step 2: Convert to fraction form
   1,082.08/1,615.73 = 928.18/x
3. Step 3: Cross multiply
   1,082.08x = 1,615.73 × 928.18
4. Step 4: Simplify right side
   1,082.08x = 1,499,688.27
5. Step 5: Solve for x
   x = 1,499,688.27/1,082.08
6. Step 6: Final answer
   x = 1,385.93