Finding the Fourth Proportional to 2,287.83, 3,431.40 and 901.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,287.83 : 3,431.40 = 901.07 : x
2. Step 2: Convert to fraction form
   2,287.83/3,431.40 = 901.07/x
3. Step 3: Cross multiply
   2,287.83x = 3,431.40 × 901.07
4. Step 4: Simplify right side
   2,287.83x = 3,091,931.60
5. Step 5: Solve for x
   x = 3,091,931.60/2,287.83
6. Step 6: Final answer
   x = 1,351.47