Finding the Fourth Proportional to 1,109.03, 1,521.55 and 1,080.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,109.03 : 1,521.55 = 1,080.29 : x
2. Step 2: Convert to fraction form
   1,109.03/1,521.55 = 1,080.29/x
3. Step 3: Cross multiply
   1,109.03x = 1,521.55 × 1,080.29
4. Step 4: Simplify right side
   1,109.03x = 1,643,715.25
5. Step 5: Solve for x
   x = 1,643,715.25/1,109.03
6. Step 6: Final answer
   x = 1,482.12