Finding the Fourth Proportional to 1,335.17, 1,842.50 and 775.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,335.17 : 1,842.50 = 775.73 : x
2. Step 2: Convert to fraction form
   1,335.17/1,842.50 = 775.73/x
3. Step 3: Cross multiply
   1,335.17x = 1,842.50 × 775.73
4. Step 4: Simplify right side
   1,335.17x = 1,429,269.43
5. Step 5: Solve for x
   x = 1,429,269.43/1,335.17
6. Step 6: Final answer
   x = 1,070.48