Finding the Fourth Proportional to 1,501.06, 2,071.65 and 911.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,501.06 : 2,071.65 = 911.56 : x
2. Step 2: Convert to fraction form
   1,501.06/2,071.65 = 911.56/x
3. Step 3: Cross multiply
   1,501.06x = 2,071.65 × 911.56
4. Step 4: Simplify right side
   1,501.06x = 1,888,433.27
5. Step 5: Solve for x
   x = 1,888,433.27/1,501.06
6. Step 6: Final answer
   x = 1,258.07