Finding the Fourth Proportional to 1,074.15, 1,608.48 and 707.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,074.15 : 1,608.48 = 707.82 : x
2. Step 2: Convert to fraction form
   1,074.15/1,608.48 = 707.82/x
3. Step 3: Cross multiply
   1,074.15x = 1,608.48 × 707.82
4. Step 4: Simplify right side
   1,074.15x = 1,138,514.31
5. Step 5: Solve for x
   x = 1,138,514.31/1,074.15
6. Step 6: Final answer
   x = 1,059.92