Finding the Fourth Proportional to 1,141.14, 1,710.32 and 647.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,141.14 : 1,710.32 = 647.54 : x
2. Step 2: Convert to fraction form
   1,141.14/1,710.32 = 647.54/x
3. Step 3: Cross multiply
   1,141.14x = 1,710.32 × 647.54
4. Step 4: Simplify right side
   1,141.14x = 1,107,488.82
5. Step 5: Solve for x
   x = 1,107,488.82/1,141.14
6. Step 6: Final answer
   x = 970.51