Finding the Fourth Proportional to 1,157.01, 1,596.93 and 715.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,157.01 : 1,596.93 = 715.38 : x
2. Step 2: Convert to fraction form
   1,157.01/1,596.93 = 715.38/x
3. Step 3: Cross multiply
   1,157.01x = 1,596.93 × 715.38
4. Step 4: Simplify right side
   1,157.01x = 1,142,411.78
5. Step 5: Solve for x
   x = 1,142,411.78/1,157.01
6. Step 6: Final answer
   x = 987.38