Finding the Fourth Proportional to 2,784.78, 3,839.40 and 1,997.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,784.78 : 3,839.40 = 1,997.46 : x
2. Step 2: Convert to fraction form
   2,784.78/3,839.40 = 1,997.46/x
3. Step 3: Cross multiply
   2,784.78x = 3,839.40 × 1,997.46
4. Step 4: Simplify right side
   2,784.78x = 7,669,047.92
5. Step 5: Solve for x
   x = 7,669,047.92/2,784.78
6. Step 6: Final answer
   x = 2,753.92