Finding the Fourth Proportional to 2,320.80, 3,477.72 and 1,222.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,320.80 : 3,477.72 = 1,222.53 : x
2. Step 2: Convert to fraction form
   2,320.80/3,477.72 = 1,222.53/x
3. Step 3: Cross multiply
   2,320.80x = 3,477.72 × 1,222.53
4. Step 4: Simplify right side
   2,320.80x = 4,251,617.03
5. Step 5: Solve for x
   x = 4,251,617.03/2,320.80
6. Step 6: Final answer
   x = 1,831.96