Finding the Fourth Proportional to 1,362.69, 1,880.34 and 773.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,362.69 : 1,880.34 = 773.10 : x
2. Step 2: Convert to fraction form
   1,362.69/1,880.34 = 773.10/x
3. Step 3: Cross multiply
   1,362.69x = 1,880.34 × 773.10
4. Step 4: Simplify right side
   1,362.69x = 1,453,690.85
5. Step 5: Solve for x
   x = 1,453,690.85/1,362.69
6. Step 6: Final answer
   x = 1,066.78