Finding the Fourth Proportional to 1,396.94, 1,927.72 and 767.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,396.94 : 1,927.72 = 767.45 : x
2. Step 2: Convert to fraction form
   1,396.94/1,927.72 = 767.45/x
3. Step 3: Cross multiply
   1,396.94x = 1,927.72 × 767.45
4. Step 4: Simplify right side
   1,396.94x = 1,479,428.71
5. Step 5: Solve for x
   x = 1,479,428.71/1,396.94
6. Step 6: Final answer
   x = 1,059.05