Finding the Fourth Proportional to 1,401.56, 1,934.13 and 772.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.56 : 1,934.13 = 772.12 : x
2. Step 2: Convert to fraction form
   1,401.56/1,934.13 = 772.12/x
3. Step 3: Cross multiply
   1,401.56x = 1,934.13 × 772.12
4. Step 4: Simplify right side
   1,401.56x = 1,493,380.46
5. Step 5: Solve for x
   x = 1,493,380.46/1,401.56
6. Step 6: Final answer
   x = 1,065.51