Finding the Fourth Proportional to 1,401.58, 1,934.19 and 772.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.58 : 1,934.19 = 772.09 : x
2. Step 2: Convert to fraction form
   1,401.58/1,934.19 = 772.09/x
3. Step 3: Cross multiply
   1,401.58x = 1,934.19 × 772.09
4. Step 4: Simplify right side
   1,401.58x = 1,493,373.72
5. Step 5: Solve for x
   x = 1,493,373.72/1,401.58
6. Step 6: Final answer
   x = 1,065.49