Finding the Fourth Proportional to 2,892.48, 3,990 and 1,842.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,892.48 : 3,990 = 1,842.72 : x
2. Step 2: Convert to fraction form
   2,892.48/3,990 = 1,842.72/x
3. Step 3: Cross multiply
   2,892.48x = 3,990 × 1,842.72
4. Step 4: Simplify right side
   2,892.48x = 7,352,452.80
5. Step 5: Solve for x
   x = 7,352,452.80/2,892.48
6. Step 6: Final answer
   x = 2,541.92