Finding the Fourth Proportional to 1,145.43, 1,581.10 and 896.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,145.43 : 1,581.10 = 896.83 : x
2. Step 2: Convert to fraction form
   1,145.43/1,581.10 = 896.83/x
3. Step 3: Cross multiply
   1,145.43x = 1,581.10 × 896.83
4. Step 4: Simplify right side
   1,145.43x = 1,417,971.72
5. Step 5: Solve for x
   x = 1,417,971.72/1,145.43
6. Step 6: Final answer
   x = 1,237.94