Finding the Fourth Proportional to 2,460.78, 3,691.31 and 900.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,460.78 : 3,691.31 = 900.59 : x
2. Step 2: Convert to fraction form
   2,460.78/3,691.31 = 900.59/x
3. Step 3: Cross multiply
   2,460.78x = 3,691.31 × 900.59
4. Step 4: Simplify right side
   2,460.78x = 3,324,333.91
5. Step 5: Solve for x
   x = 3,324,333.91/2,460.78
6. Step 6: Final answer
   x = 1,350.93