Finding the Fourth Proportional to 2,880.72, 4,321.18 and 1,031.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,880.72 : 4,321.18 = 1,031.96 : x
2. Step 2: Convert to fraction form
   2,880.72/4,321.18 = 1,031.96/x
3. Step 3: Cross multiply
   2,880.72x = 4,321.18 × 1,031.96
4. Step 4: Simplify right side
   2,880.72x = 4,459,284.91
5. Step 5: Solve for x
   x = 4,459,284.91/2,880.72
6. Step 6: Final answer
   x = 1,547.98