Finding the Fourth Proportional to 1,396.52, 1,927.22 and 775.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,396.52 : 1,927.22 = 775.56 : x
2. Step 2: Convert to fraction form
   1,396.52/1,927.22 = 775.56/x
3. Step 3: Cross multiply
   1,396.52x = 1,927.22 × 775.56
4. Step 4: Simplify right side
   1,396.52x = 1,494,674.74
5. Step 5: Solve for x
   x = 1,494,674.74/1,396.52
6. Step 6: Final answer
   x = 1,070.29