Finding the Fourth Proportional to 1,335.39, 1,842.52 and 775.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,335.39 : 1,842.52 = 775.54 : x
2. Step 2: Convert to fraction form
   1,335.39/1,842.52 = 775.54/x
3. Step 3: Cross multiply
   1,335.39x = 1,842.52 × 775.54
4. Step 4: Simplify right side
   1,335.39x = 1,428,938.75
5. Step 5: Solve for x
   x = 1,428,938.75/1,335.39
6. Step 6: Final answer
   x = 1,070.05