Finding the Fourth Proportional to 1,082.18, 1,621.89 and 734.65

Step by Step Solution

1. Step 1: Write the proportion equation
   1,082.18 : 1,621.89 = 734.65 : x
2. Step 2: Convert to fraction form
   1,082.18/1,621.89 = 734.65/x
3. Step 3: Cross multiply
   1,082.18x = 1,621.89 × 734.65
4. Step 4: Simplify right side
   1,082.18x = 1,191,513.38
5. Step 5: Solve for x
   x = 1,191,513.38/1,082.18
6. Step 6: Final answer
   x = 1,101.04