Finding the Fourth Proportional to 1,356.99, 1,872.63 and 767.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,356.99 : 1,872.63 = 767.52 : x
2. Step 2: Convert to fraction form
   1,356.99/1,872.63 = 767.52/x
3. Step 3: Cross multiply
   1,356.99x = 1,872.63 × 767.52
4. Step 4: Simplify right side
   1,356.99x = 1,437,280.98
5. Step 5: Solve for x
   x = 1,437,280.98/1,356.99
6. Step 6: Final answer
   x = 1,059.17