Finding the Fourth Proportional to 1,500.77, 2,071.69 and 911.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,500.77 : 2,071.69 = 911.49 : x
2. Step 2: Convert to fraction form
   1,500.77/2,071.69 = 911.49/x
3. Step 3: Cross multiply
   1,500.77x = 2,071.69 × 911.49
4. Step 4: Simplify right side
   1,500.77x = 1,888,322.44
5. Step 5: Solve for x
   x = 1,888,322.44/1,500.77
6. Step 6: Final answer
   x = 1,258.24