Finding the Fourth Proportional to 1,139.24, 1,701.78 and 954.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139.24 : 1,701.78 = 954.71 : x
2. Step 2: Convert to fraction form
   1,139.24/1,701.78 = 954.71/x
3. Step 3: Cross multiply
   1,139.24x = 1,701.78 × 954.71
4. Step 4: Simplify right side
   1,139.24x = 1,624,706.38
5. Step 5: Solve for x
   x = 1,624,706.38/1,139.24
6. Step 6: Final answer
   x = 1,426.13