Finding the Fourth Proportional to 1,850.46, 2,553.89 and 1,189.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,850.46 : 2,553.89 = 1,189.05 : x
2. Step 2: Convert to fraction form
   1,850.46/2,553.89 = 1,189.05/x
3. Step 3: Cross multiply
   1,850.46x = 2,553.89 × 1,189.05
4. Step 4: Simplify right side
   1,850.46x = 3,036,696.96
5. Step 5: Solve for x
   x = 3,036,696.96/1,850.46
6. Step 6: Final answer
   x = 1,641.05