Finding the Fourth Proportional to 2,488.10, 3,730.88 and 1,392.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,488.10 : 3,730.88 = 1,392.17 : x
2. Step 2: Convert to fraction form
   2,488.10/3,730.88 = 1,392.17/x
3. Step 3: Cross multiply
   2,488.10x = 3,730.88 × 1,392.17
4. Step 4: Simplify right side
   2,488.10x = 5,194,004.04
5. Step 5: Solve for x
   x = 5,194,004.04/2,488.10
6. Step 6: Final answer
   x = 2,087.54