Finding the Fourth Proportional to 3,002.22, 4,505.76 and 1,272.06

Step by Step Solution

1. Step 1: Write the proportion equation
   3,002.22 : 4,505.76 = 1,272.06 : x
2. Step 2: Convert to fraction form
   3,002.22/4,505.76 = 1,272.06/x
3. Step 3: Cross multiply
   3,002.22x = 4,505.76 × 1,272.06
4. Step 4: Simplify right side
   3,002.22x = 5,731,597.07
5. Step 5: Solve for x
   x = 5,731,597.07/3,002.22
6. Step 6: Final answer
   x = 1,909.12