Finding the Fourth Proportional to 1,001.81, 1,382.89 and 896.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,001.81 : 1,382.89 = 896.72 : x
2. Step 2: Convert to fraction form
   1,001.81/1,382.89 = 896.72/x
3. Step 3: Cross multiply
   1,001.81x = 1,382.89 × 896.72
4. Step 4: Simplify right side
   1,001.81x = 1,240,060.39
5. Step 5: Solve for x
   x = 1,240,060.39/1,001.81
6. Step 6: Final answer
   x = 1,237.81