Finding the Fourth Proportional to 1,489.59, 2,056.39 and 892.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,489.59 : 2,056.39 = 892.42 : x
2. Step 2: Convert to fraction form
   1,489.59/2,056.39 = 892.42/x
3. Step 3: Cross multiply
   1,489.59x = 2,056.39 × 892.42
4. Step 4: Simplify right side
   1,489.59x = 1,835,156.19
5. Step 5: Solve for x
   x = 1,835,156.19/1,489.59
6. Step 6: Final answer
   x = 1,231.99