Finding the Fourth Proportional to 1,892.89, 2,837.71 and 660.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,892.89 : 2,837.71 = 660.12 : x
2. Step 2: Convert to fraction form
   1,892.89/2,837.71 = 660.12/x
3. Step 3: Cross multiply
   1,892.89x = 2,837.71 × 660.12
4. Step 4: Simplify right side
   1,892.89x = 1,873,241.40
5. Step 5: Solve for x
   x = 1,873,241.40/1,892.89
6. Step 6: Final answer
   x = 989.62