Finding the Fourth Proportional to 1,139.82, 1,705.77 and 700.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139.82 : 1,705.77 = 700.88 : x
2. Step 2: Convert to fraction form
   1,139.82/1,705.77 = 700.88/x
3. Step 3: Cross multiply
   1,139.82x = 1,705.77 × 700.88
4. Step 4: Simplify right side
   1,139.82x = 1,195,531.55
5. Step 5: Solve for x
   x = 1,195,531.55/1,139.82
6. Step 6: Final answer
   x = 1,048.88