Finding the Fourth Proportional to 2,010.55, 3,017.37 and 900.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,010.55 : 3,017.37 = 900.31 : x
2. Step 2: Convert to fraction form
   2,010.55/3,017.37 = 900.31/x
3. Step 3: Cross multiply
   2,010.55x = 3,017.37 × 900.31
4. Step 4: Simplify right side
   2,010.55x = 2,716,568.38
5. Step 5: Solve for x
   x = 2,716,568.38/2,010.55
6. Step 6: Final answer
   x = 1,351.16