Finding the Fourth Proportional to 1,155.42, 1,593.81 and 712.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,155.42 : 1,593.81 = 712.98 : x
2. Step 2: Convert to fraction form
   1,155.42/1,593.81 = 712.98/x
3. Step 3: Cross multiply
   1,155.42x = 1,593.81 × 712.98
4. Step 4: Simplify right side
   1,155.42x = 1,136,354.65
5. Step 5: Solve for x
   x = 1,136,354.65/1,155.42
6. Step 6: Final answer
   x = 983.50