Finding the Fourth Proportional to 2,287.36, 3,430.72 and 901.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,287.36 : 3,430.72 = 901.72 : x
2. Step 2: Convert to fraction form
   2,287.36/3,430.72 = 901.72/x
3. Step 3: Cross multiply
   2,287.36x = 3,430.72 × 901.72
4. Step 4: Simplify right side
   2,287.36x = 3,093,548.84
5. Step 5: Solve for x
   x = 3,093,548.84/2,287.36
6. Step 6: Final answer
   x = 1,352.45