Finding the Fourth Proportional to 2,992.30, 4,128.51 and 2,047.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,992.30 : 4,128.51 = 2,047.30 : x
2. Step 2: Convert to fraction form
   2,992.30/4,128.51 = 2,047.30/x
3. Step 3: Cross multiply
   2,992.30x = 4,128.51 × 2,047.30
4. Step 4: Simplify right side
   2,992.30x = 8,452,298.52
5. Step 5: Solve for x
   x = 8,452,298.52/2,992.30
6. Step 6: Final answer
   x = 2,824.68