Finding the Fourth Proportional to 1,401.88, 1,934.56 and 772.44

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.88 : 1,934.56 = 772.44 : x
2. Step 2: Convert to fraction form
   1,401.88/1,934.56 = 772.44/x
3. Step 3: Cross multiply
   1,401.88x = 1,934.56 × 772.44
4. Step 4: Simplify right side
   1,401.88x = 1,494,331.53
5. Step 5: Solve for x
   x = 1,494,331.53/1,401.88
6. Step 6: Final answer
   x = 1,065.95