Finding the Fourth Proportional to 2,074.68, 3,112.38 and 920.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,074.68 : 3,112.38 = 920.52 : x
2. Step 2: Convert to fraction form
   2,074.68/3,112.38 = 920.52/x
3. Step 3: Cross multiply
   2,074.68x = 3,112.38 × 920.52
4. Step 4: Simplify right side
   2,074.68x = 2,865,008.04
5. Step 5: Solve for x
   x = 2,865,008.04/2,074.68
6. Step 6: Final answer
   x = 1,380.94