Finding the Fourth Proportional to 1,501.50, 2,072.07 and 912.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,501.50 : 2,072.07 = 912.09 : x
2. Step 2: Convert to fraction form
   1,501.50/2,072.07 = 912.09/x
3. Step 3: Cross multiply
   1,501.50x = 2,072.07 × 912.09
4. Step 4: Simplify right side
   1,501.50x = 1,889,914.33
5. Step 5: Solve for x
   x = 1,889,914.33/1,501.50
6. Step 6: Final answer
   x = 1,258.68