Finding the Fourth Proportional to 1,985.04, 2,739.20 and 1,100.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,985.04 : 2,739.20 = 1,100.88 : x
2. Step 2: Convert to fraction form
   1,985.04/2,739.20 = 1,100.88/x
3. Step 3: Cross multiply
   1,985.04x = 2,739.20 × 1,100.88
4. Step 4: Simplify right side
   1,985.04x = 3,015,530.50
5. Step 5: Solve for x
   x = 3,015,530.50/1,985.04
6. Step 6: Final answer
   x = 1,519.13