Finding the Fourth Proportional to 2,380.51, 3,570.29 and 920.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,380.51 : 3,570.29 = 920.62 : x
2. Step 2: Convert to fraction form
   2,380.51/3,570.29 = 920.62/x
3. Step 3: Cross multiply
   2,380.51x = 3,570.29 × 920.62
4. Step 4: Simplify right side
   2,380.51x = 3,286,880.38
5. Step 5: Solve for x
   x = 3,286,880.38/2,380.51
6. Step 6: Final answer
   x = 1,380.75