Finding the Fourth Proportional to 1,743.74, 2,404.48 and 1,388.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,743.74 : 2,404.48 = 1,388.96 : x
2. Step 2: Convert to fraction form
   1,743.74/2,404.48 = 1,388.96/x
3. Step 3: Cross multiply
   1,743.74x = 2,404.48 × 1,388.96
4. Step 4: Simplify right side
   1,743.74x = 3,339,726.54
5. Step 5: Solve for x
   x = 3,339,726.54/1,743.74
6. Step 6: Final answer
   x = 1,915.27