Finding the Fourth Proportional to 1,797.21, 2,477.61 and 1,772.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,797.21 : 2,477.61 = 1,772.55 : x
2. Step 2: Convert to fraction form
   1,797.21/2,477.61 = 1,772.55/x
3. Step 3: Cross multiply
   1,797.21x = 2,477.61 × 1,772.55
4. Step 4: Simplify right side
   1,797.21x = 4,391,687.61
5. Step 5: Solve for x
   x = 4,391,687.61/1,797.21
6. Step 6: Final answer
   x = 2,443.61