Finding the Fourth Proportional to 1,404.38, 2,103.76 and 699.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.38 : 2,103.76 = 699.47 : x
2. Step 2: Convert to fraction form
   1,404.38/2,103.76 = 699.47/x
3. Step 3: Cross multiply
   1,404.38x = 2,103.76 × 699.47
4. Step 4: Simplify right side
   1,404.38x = 1,471,508.25
5. Step 5: Solve for x
   x = 1,471,508.25/1,404.38
6. Step 6: Final answer
   x = 1,047.80