Finding the Fourth Proportional to 1,334.58, 2,002.88 and 872.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,334.58 : 2,002.88 = 872.22 : x
2. Step 2: Convert to fraction form
   1,334.58/2,002.88 = 872.22/x
3. Step 3: Cross multiply
   1,334.58x = 2,002.88 × 872.22
4. Step 4: Simplify right side
   1,334.58x = 1,746,945.51
5. Step 5: Solve for x
   x = 1,746,945.51/1,334.58
6. Step 6: Final answer
   x = 1,308.99