Finding the Fourth Proportional to 3,080.58, 4,619.76 and 888.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,080.58 : 4,619.76 = 888.72 : x
2. Step 2: Convert to fraction form
   3,080.58/4,619.76 = 888.72/x
3. Step 3: Cross multiply
   3,080.58x = 4,619.76 × 888.72
4. Step 4: Simplify right side
   3,080.58x = 4,105,673.11
5. Step 5: Solve for x
   x = 4,105,673.11/3,080.58
6. Step 6: Final answer
   x = 1,332.76