Finding the Fourth Proportional to 1,890.72, 2,608.71 and 1,181.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,890.72 : 2,608.71 = 1,181.46 : x
2. Step 2: Convert to fraction form
   1,890.72/2,608.71 = 1,181.46/x
3. Step 3: Cross multiply
   1,890.72x = 2,608.71 × 1,181.46
4. Step 4: Simplify right side
   1,890.72x = 3,082,086.52
5. Step 5: Solve for x
   x = 3,082,086.52/1,890.72
6. Step 6: Final answer
   x = 1,630.11