Finding the Fourth Proportional to 1,988.55, 2,744.15 and 1,104.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,988.55 : 2,744.15 = 1,104.30 : x
2. Step 2: Convert to fraction form
   1,988.55/2,744.15 = 1,104.30/x
3. Step 3: Cross multiply
   1,988.55x = 2,744.15 × 1,104.30
4. Step 4: Simplify right side
   1,988.55x = 3,030,359.32
5. Step 5: Solve for x
   x = 3,030,359.32/1,988.55
6. Step 6: Final answer
   x = 1,523.90