Finding the Fourth Proportional to 1,335.03, 1,842.12 and 775.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,335.03 : 1,842.12 = 775.59 : x
2. Step 2: Convert to fraction form
   1,335.03/1,842.12 = 775.59/x
3. Step 3: Cross multiply
   1,335.03x = 1,842.12 × 775.59
4. Step 4: Simplify right side
   1,335.03x = 1,428,729.85
5. Step 5: Solve for x
   x = 1,428,729.85/1,335.03
6. Step 6: Final answer
   x = 1,070.19