Finding the Fourth Proportional to 868.76, 1,196.88 and 693.80

Step by Step Solution

1. Step 1: Write the proportion equation
   868.76 : 1,196.88 = 693.80 : x
2. Step 2: Convert to fraction form
   868.76/1,196.88 = 693.80/x
3. Step 3: Cross multiply
   868.76x = 1,196.88 × 693.80
4. Step 4: Simplify right side
   868.76x = 830,395.34
5. Step 5: Solve for x
   x = 830,395.34/868.76
6. Step 6: Final answer
   x = 955.84