Finding the Fourth Proportional to 2,031.38, 2,803.30 and 1,099.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,031.38 : 2,803.30 = 1,099.88 : x
2. Step 2: Convert to fraction form
   2,031.38/2,803.30 = 1,099.88/x
3. Step 3: Cross multiply
   2,031.38x = 2,803.30 × 1,099.88
4. Step 4: Simplify right side
   2,031.38x = 3,083,276.84
5. Step 5: Solve for x
   x = 3,083,276.84/2,031.38
6. Step 6: Final answer
   x = 1,517.83