Finding the Fourth Proportional to 2,031.52, 3,048.72 and 876.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,031.52 : 3,048.72 = 876.64 : x
2. Step 2: Convert to fraction form
   2,031.52/3,048.72 = 876.64/x
3. Step 3: Cross multiply
   2,031.52x = 3,048.72 × 876.64
4. Step 4: Simplify right side
   2,031.52x = 2,672,629.90
5. Step 5: Solve for x
   x = 2,672,629.90/2,031.52
6. Step 6: Final answer
   x = 1,315.58