Finding the Fourth Proportional to 1,181.82, 1,769.06 and 868.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,181.82 : 1,769.06 = 868.80 : x
2. Step 2: Convert to fraction form
   1,181.82/1,769.06 = 868.80/x
3. Step 3: Cross multiply
   1,181.82x = 1,769.06 × 868.80
4. Step 4: Simplify right side
   1,181.82x = 1,536,959.33
5. Step 5: Solve for x
   x = 1,536,959.33/1,181.82
6. Step 6: Final answer
   x = 1,300.50