Finding the Fourth Proportional to 2,260.78, 3,116.43 and 1,631.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,260.78 : 3,116.43 = 1,631.02 : x
2. Step 2: Convert to fraction form
   2,260.78/3,116.43 = 1,631.02/x
3. Step 3: Cross multiply
   2,260.78x = 3,116.43 × 1,631.02
4. Step 4: Simplify right side
   2,260.78x = 5,082,959.66
5. Step 5: Solve for x
   x = 5,082,959.66/2,260.78
6. Step 6: Final answer
   x = 2,248.32