Finding the Fourth Proportional to 1,036.68, 1,431.98 and 768.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,036.68 : 1,431.98 = 768.04 : x
2. Step 2: Convert to fraction form
   1,036.68/1,431.98 = 768.04/x
3. Step 3: Cross multiply
   1,036.68x = 1,431.98 × 768.04
4. Step 4: Simplify right side
   1,036.68x = 1,099,824.10
5. Step 5: Solve for x
   x = 1,099,824.10/1,036.68
6. Step 6: Final answer
   x = 1,060.91