Finding the Fourth Proportional to 2,488.72, 3,733.31 and 928.36

Step by Step Solution

1. Step 1: Write the proportion equation
   2,488.72 : 3,733.31 = 928.36 : x
2. Step 2: Convert to fraction form
   2,488.72/3,733.31 = 928.36/x
3. Step 3: Cross multiply
   2,488.72x = 3,733.31 × 928.36
4. Step 4: Simplify right side
   2,488.72x = 3,465,848.66
5. Step 5: Solve for x
   x = 3,465,848.66/2,488.72
6. Step 6: Final answer
   x = 1,392.62