Finding the Fourth Proportional to 1,997.55, 2,756.90 and 1,158.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,997.55 : 2,756.90 = 1,158.53 : x
2. Step 2: Convert to fraction form
   1,997.55/2,756.90 = 1,158.53/x
3. Step 3: Cross multiply
   1,997.55x = 2,756.90 × 1,158.53
4. Step 4: Simplify right side
   1,997.55x = 3,193,940.47
5. Step 5: Solve for x
   x = 3,193,940.47/1,997.55
6. Step 6: Final answer
   x = 1,598.93