Finding the Fourth Proportional to 3,788.48, 5,679.36 and 1,838.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,788.48 : 5,679.36 = 1,838.72 : x
2. Step 2: Convert to fraction form
   3,788.48/5,679.36 = 1,838.72/x
3. Step 3: Cross multiply
   3,788.48x = 5,679.36 × 1,838.72
4. Step 4: Simplify right side
   3,788.48x = 10,442,752.82
5. Step 5: Solve for x
   x = 10,442,752.82/3,788.48
6. Step 6: Final answer
   x = 2,756.45