Finding the Fourth Proportional to 1,039.84, 1,434.17 and 707.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,039.84 : 1,434.17 = 707.67 : x
2. Step 2: Convert to fraction form
   1,039.84/1,434.17 = 707.67/x
3. Step 3: Cross multiply
   1,039.84x = 1,434.17 × 707.67
4. Step 4: Simplify right side
   1,039.84x = 1,014,920.85
5. Step 5: Solve for x
   x = 1,014,920.85/1,039.84
6. Step 6: Final answer
   x = 976.04