Finding the Fourth Proportional to 1,401.17, 1,933.56 and 771.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.17 : 1,933.56 = 771.71 : x
2. Step 2: Convert to fraction form
   1,401.17/1,933.56 = 771.71/x
3. Step 3: Cross multiply
   1,401.17x = 1,933.56 × 771.71
4. Step 4: Simplify right side
   1,401.17x = 1,492,137.92
5. Step 5: Solve for x
   x = 1,492,137.92/1,401.17
6. Step 6: Final answer
   x = 1,064.93