Finding the Fourth Proportional to 1,480.88, 2,043.59 and 817.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,480.88 : 2,043.59 = 817.72 : x
2. Step 2: Convert to fraction form
   1,480.88/2,043.59 = 817.72/x
3. Step 3: Cross multiply
   1,480.88x = 2,043.59 × 817.72
4. Step 4: Simplify right side
   1,480.88x = 1,671,075.22
5. Step 5: Solve for x
   x = 1,671,075.22/1,480.88
6. Step 6: Final answer
   x = 1,128.43