Finding the Fourth Proportional to 1,137.77, 1,570.38 and 696.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,137.77 : 1,570.38 = 696.04 : x
2. Step 2: Convert to fraction form
   1,137.77/1,570.38 = 696.04/x
3. Step 3: Cross multiply
   1,137.77x = 1,570.38 × 696.04
4. Step 4: Simplify right side
   1,137.77x = 1,093,047.30
5. Step 5: Solve for x
   x = 1,093,047.30/1,137.77
6. Step 6: Final answer
   x = 960.69