Finding the Fourth Proportional to 2,488.38, 3,729.97 and 927.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,488.38 : 3,729.97 = 927.70 : x
2. Step 2: Convert to fraction form
   2,488.38/3,729.97 = 927.70/x
3. Step 3: Cross multiply
   2,488.38x = 3,729.97 × 927.70
4. Step 4: Simplify right side
   2,488.38x = 3,460,300.77
5. Step 5: Solve for x
   x = 3,460,300.77/2,488.38
6. Step 6: Final answer
   x = 1,390.58