Finding the Fourth Proportional to 1,036.34, 1,431.42 and 775.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,036.34 : 1,431.42 = 775.52 : x
2. Step 2: Convert to fraction form
   1,036.34/1,431.42 = 775.52/x
3. Step 3: Cross multiply
   1,036.34x = 1,431.42 × 775.52
4. Step 4: Simplify right side
   1,036.34x = 1,110,094.84
5. Step 5: Solve for x
   x = 1,110,094.84/1,036.34
6. Step 6: Final answer
   x = 1,071.17