Finding the Fourth Proportional to 1,320.35, 1,822.10 and 760.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,320.35 : 1,822.10 = 760.72 : x
2. Step 2: Convert to fraction form
   1,320.35/1,822.10 = 760.72/x
3. Step 3: Cross multiply
   1,320.35x = 1,822.10 × 760.72
4. Step 4: Simplify right side
   1,320.35x = 1,386,107.25
5. Step 5: Solve for x
   x = 1,386,107.25/1,320.35
6. Step 6: Final answer
   x = 1,049.81