Finding the Fourth Proportional to 1,320.53, 1,821.53 and 848.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,320.53 : 1,821.53 = 848.27 : x
2. Step 2: Convert to fraction form
   1,320.53/1,821.53 = 848.27/x
3. Step 3: Cross multiply
   1,320.53x = 1,821.53 × 848.27
4. Step 4: Simplify right side
   1,320.53x = 1,545,142.27
5. Step 5: Solve for x
   x = 1,545,142.27/1,320.53
6. Step 6: Final answer
   x = 1,170.09