Finding the Fourth Proportional to 1,356.96, 1,872.52 and 767.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,356.96 : 1,872.52 = 767.56 : x
2. Step 2: Convert to fraction form
   1,356.96/1,872.52 = 767.56/x
3. Step 3: Cross multiply
   1,356.96x = 1,872.52 × 767.56
4. Step 4: Simplify right side
   1,356.96x = 1,437,271.45
5. Step 5: Solve for x
   x = 1,437,271.45/1,356.96
6. Step 6: Final answer
   x = 1,059.18