Finding the Fourth Proportional to 1,070.82, 1,599.69 and 697.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,070.82 : 1,599.69 = 697.59 : x
2. Step 2: Convert to fraction form
   1,070.82/1,599.69 = 697.59/x
3. Step 3: Cross multiply
   1,070.82x = 1,599.69 × 697.59
4. Step 4: Simplify right side
   1,070.82x = 1,115,927.75
5. Step 5: Solve for x
   x = 1,115,927.75/1,070.82
6. Step 6: Final answer
   x = 1,042.12