Finding the Fourth Proportional to 2,031.69, 3,047.80 and 715.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,031.69 : 3,047.80 = 715.30 : x
2. Step 2: Convert to fraction form
   2,031.69/3,047.80 = 715.30/x
3. Step 3: Cross multiply
   2,031.69x = 3,047.80 × 715.30
4. Step 4: Simplify right side
   2,031.69x = 2,180,091.34
5. Step 5: Solve for x
   x = 2,180,091.34/2,031.69
6. Step 6: Final answer
   x = 1,073.04