Finding the Fourth Proportional to 1,401.85, 1,934.53 and 772.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.85 : 1,934.53 = 772.38 : x
2. Step 2: Convert to fraction form
   1,401.85/1,934.53 = 772.38/x
3. Step 3: Cross multiply
   1,401.85x = 1,934.53 × 772.38
4. Step 4: Simplify right side
   1,401.85x = 1,494,188.45
5. Step 5: Solve for x
   x = 1,494,188.45/1,401.85
6. Step 6: Final answer
   x = 1,065.87