Finding the Fourth Proportional to 1,139.03, 1,707.83 and 651.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139.03 : 1,707.83 = 651.41 : x
2. Step 2: Convert to fraction form
   1,139.03/1,707.83 = 651.41/x
3. Step 3: Cross multiply
   1,139.03x = 1,707.83 × 651.41
4. Step 4: Simplify right side
   1,139.03x = 1,112,497.54
5. Step 5: Solve for x
   x = 1,112,497.54/1,139.03
6. Step 6: Final answer
   x = 976.71