Finding the Fourth Proportional to 1,404.08, 2,105.28 and 1,198.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.08 : 2,105.28 = 1,198.72 : x
2. Step 2: Convert to fraction form
   1,404.08/2,105.28 = 1,198.72/x
3. Step 3: Cross multiply
   1,404.08x = 2,105.28 × 1,198.72
4. Step 4: Simplify right side
   1,404.08x = 2,523,641.24
5. Step 5: Solve for x
   x = 2,523,641.24/1,404.08
6. Step 6: Final answer
   x = 1,797.36