Finding the Fourth Proportional to 1,362.72, 1,880.12 and 773.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,362.72 : 1,880.12 = 773.24 : x
2. Step 2: Convert to fraction form
   1,362.72/1,880.12 = 773.24/x
3. Step 3: Cross multiply
   1,362.72x = 1,880.12 × 773.24
4. Step 4: Simplify right side
   1,362.72x = 1,453,783.99
5. Step 5: Solve for x
   x = 1,453,783.99/1,362.72
6. Step 6: Final answer
   x = 1,066.83