Finding the Fourth Proportional to 1,103.80, 1,647.59 and 1,030.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,103.80 : 1,647.59 = 1,030.84 : x
2. Step 2: Convert to fraction form
   1,103.80/1,647.59 = 1,030.84/x
3. Step 3: Cross multiply
   1,103.80x = 1,647.59 × 1,030.84
4. Step 4: Simplify right side
   1,103.80x = 1,698,401.68
5. Step 5: Solve for x
   x = 1,698,401.68/1,103.80
6. Step 6: Final answer
   x = 1,538.69