Finding the Fourth Proportional to 1,334.91, 1,842.31 and 775.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,334.91 : 1,842.31 = 775.34 : x
2. Step 2: Convert to fraction form
   1,334.91/1,842.31 = 775.34/x
3. Step 3: Cross multiply
   1,334.91x = 1,842.31 × 775.34
4. Step 4: Simplify right side
   1,334.91x = 1,428,415.30
5. Step 5: Solve for x
   x = 1,428,415.30/1,334.91
6. Step 6: Final answer
   x = 1,070.04