Finding the Fourth Proportional to 2,031.80, 2,803.88 and 1,100.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,031.80 : 2,803.88 = 1,100.30 : x
2. Step 2: Convert to fraction form
   2,031.80/2,803.88 = 1,100.30/x
3. Step 3: Cross multiply
   2,031.80x = 2,803.88 × 1,100.30
4. Step 4: Simplify right side
   2,031.80x = 3,085,089.64
5. Step 5: Solve for x
   x = 3,085,089.64/2,031.80
6. Step 6: Final answer
   x = 1,518.41