Finding the Fourth Proportional to 1,080.15, 1,612.38 and 1,004.19

Step by Step Solution

1. Step 1: Write the proportion equation
   1,080.15 : 1,612.38 = 1,004.19 : x
2. Step 2: Convert to fraction form
   1,080.15/1,612.38 = 1,004.19/x
3. Step 3: Cross multiply
   1,080.15x = 1,612.38 × 1,004.19
4. Step 4: Simplify right side
   1,080.15x = 1,619,138.38
5. Step 5: Solve for x
   x = 1,619,138.38/1,080.15
6. Step 6: Final answer
   x = 1,498.99