Finding the Fourth Proportional to 3,071.72, 4,607.69 and 880.47

Step by Step Solution

1. Step 1: Write the proportion equation
   3,071.72 : 4,607.69 = 880.47 : x
2. Step 2: Convert to fraction form
   3,071.72/4,607.69 = 880.47/x
3. Step 3: Cross multiply
   3,071.72x = 4,607.69 × 880.47
4. Step 4: Simplify right side
   3,071.72x = 4,056,928.41
5. Step 5: Solve for x
   x = 4,056,928.41/3,071.72
6. Step 6: Final answer
   x = 1,320.73