Finding the Fourth Proportional to 2,031.39, 2,803.35 and 1,245.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,031.39 : 2,803.35 = 1,245.30 : x
2. Step 2: Convert to fraction form
   2,031.39/2,803.35 = 1,245.30/x
3. Step 3: Cross multiply
   2,031.39x = 2,803.35 × 1,245.30
4. Step 4: Simplify right side
   2,031.39x = 3,491,011.76
5. Step 5: Solve for x
   x = 3,491,011.76/2,031.39
6. Step 6: Final answer
   x = 1,718.53