Finding the Fourth Proportional to 1,140.89, 1,710.72 and 896.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,140.89 : 1,710.72 = 896.67 : x
2. Step 2: Convert to fraction form
   1,140.89/1,710.72 = 896.67/x
3. Step 3: Cross multiply
   1,140.89x = 1,710.72 × 896.67
4. Step 4: Simplify right side
   1,140.89x = 1,533,951.30
5. Step 5: Solve for x
   x = 1,533,951.30/1,140.89
6. Step 6: Final answer
   x = 1,344.53