Finding the Fourth Proportional to 1,137.98, 1,570.38 and 695.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,137.98 : 1,570.38 = 695.72 : x
2. Step 2: Convert to fraction form
   1,137.98/1,570.38 = 695.72/x
3. Step 3: Cross multiply
   1,137.98x = 1,570.38 × 695.72
4. Step 4: Simplify right side
   1,137.98x = 1,092,544.77
5. Step 5: Solve for x
   x = 1,092,544.77/1,137.98
6. Step 6: Final answer
   x = 960.07