Finding the Fourth Proportional to 3,830.72, 5,743.37 and 1,488.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,830.72 : 5,743.37 = 1,488.78 : x
2. Step 2: Convert to fraction form
   3,830.72/5,743.37 = 1,488.78/x
3. Step 3: Cross multiply
   3,830.72x = 5,743.37 × 1,488.78
4. Step 4: Simplify right side
   3,830.72x = 8,550,618.11
5. Step 5: Solve for x
   x = 8,550,618.11/3,830.72
6. Step 6: Final answer
   x = 2,232.12