Finding the Fourth Proportional to 1,401.11, 1,931.45 and 896.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.11 : 1,931.45 = 896.91 : x
2. Step 2: Convert to fraction form
   1,401.11/1,931.45 = 896.91/x
3. Step 3: Cross multiply
   1,401.11x = 1,931.45 × 896.91
4. Step 4: Simplify right side
   1,401.11x = 1,732,336.82
5. Step 5: Solve for x
   x = 1,732,336.82/1,401.11
6. Step 6: Final answer
   x = 1,236.40