Finding the Fourth Proportional to 2,624.48, 3,932.05 and 1,392.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,624.48 : 3,932.05 = 1,392.74 : x
2. Step 2: Convert to fraction form
   2,624.48/3,932.05 = 1,392.74/x
3. Step 3: Cross multiply
   2,624.48x = 3,932.05 × 1,392.74
4. Step 4: Simplify right side
   2,624.48x = 5,476,323.32
5. Step 5: Solve for x
   x = 5,476,323.32/2,624.48
6. Step 6: Final answer
   x = 2,086.63